ADJUSTABLE VISOR SYSTEM

Description

Field of the invention

[0001] The present invention relates to an adjustable, in particular folding, height-, and windage-adjustable sighting device for a handgun. The invention further relates to a front sight support element for such a sighting device. The invention further relates to an axis and a holding device for the sighting device. The invention also relates to a handgun equipped with such a sighting device.

[0002] In these documents, position designations such as "top", "bottom", "front", "rear", etc. refer to a firearm in which the bore axis is horizontal and the shot is fired forward, away from the shooter.

[0003] Adjustable sighting devices are generally known from the prior art. For example, DE 39 38 797 A1 discloses a pivoting front sight with an adjusting screw mounted in the front sight, allowing the front sight to be adjusted in height in a pivoted position. In the sight known from US Pat. No. 4,686,770 A, a lateral displacement of the front sight can be achieved by turning an adjusting screw. The front sight can be adjusted in height using a threaded bolt.

[0004] WO 2008 / 092668 A1 discloses a connecting piece with a sighting element, which comprises an adjusting element that can be moved from a sighting position into an adjusting position against a spring force, wherein the adjusting element is releasably fixed in its sighting position with respect to the sighting element via a locking mechanism and can be moved into different sighting positions in its adjusted position. Furthermore, the invention relates to a second connecting piece, which comprises a second sighting element that can be arranged directly on a handguard of a weapon and that can be pivoted about a pivoting element from a rest position into an operating position, wherein the second sighting element has a securing element that fixes the sighting element in the operating position transversely to the bore axis against a bearing. Task and solution

[0005] The present invention is based on the object of providing an alternative adjustable sighting device, in particular one that is adjustable for folding, height, and windage. In particular, a mechanical sighting device is to be provided that has fewer components and is lightweight and compact, and that can be manufactured with less effort. Furthermore, it is an object of the invention to provide a sighting device with a mechanism that prevents unintentional lateral adjustment of the sighting device and provides intended lateral adjustment in a user-friendly manner. The present invention is further based on the object of providing a front sight carrier element, an axis, and an adjustment element for the sighting device. Finally, the present invention is based on the object of providing a handgun with the sighting device.

[0006] The problem is solved by the features of claims 1 and 15.

[0007] According to a first aspect of the invention, a front sight carrier element is provided for an adjustable sighting device, in particular for a folding, height and side adjustable sighting device.

[0008] The front sight carrier element according to the invention comprises a hollow-shaped body with a first section and a second section connected to the first section. The first section of the front sight carrier element serves in particular to accommodate a front sight. The second section serves in particular to accommodate a spring element and an adjustment element that can be releasably connected to the front sight.

[0009] At least one radially inwardly extending projection is provided axially between the first and second sections, which is designed, on the one hand, as a limiting element for the front sight and, on the other hand, as a stop for the spring element. The projection is designed such that movement of the adjustment element within the first and second sections of the front sight carrier element in the axial direction is permitted.

[0010] The front sight carrier element according to the invention further comprises at least one threaded bore arranged in the second section. The axle can be received in this bore. The front sight carrier element is preferably pivotable, i.e., in particular, mounted on a holder device connected to the weapon so that it can be folded up and down. By means of the thread, a rotational movement of the axle can be transmitted or passed on to the front sight carrier element. For this purpose, the axle has, in particular, a thread corresponding to the threaded bore.

[0011] In other words, the front sight carrier element according to the invention can accommodate an adjustment element which, on the one hand, is spring-mounted within the hollow front sight carrier element and, on the other hand, is detachably connectable to the front sight, for example by means of a thread. Such a front sight carrier element can be folded up and down against the force of the spring element, i.e., pivoted about the axis of rotation of the axle. Such a front sight carrier element further enables movement of the front sight detachably connected to the adjustment element against and with the force of the spring element, so that the front sight can, for example, be moved from a locked position against the spring force, then adjusted in height by rotation, and then moved back into the locked position using the spring force. Such a front sight carrier element can further be mounted on an axle with a thread.The rotational movement of the axis is thus transmitted to the front sight carrier element and the front sight carrier element can be moved sideways to the left or to the right, depending on the direction of rotation of the axis.

[0012] In a preferred embodiment, the at least one radially inwardly extending projection is circumferential or annular and has a bore through which the adjusting element can be guided.

[0013] In a preferred embodiment, the second section has a slotted guide at its axial end for guiding the adjusting element, so that a better, controlled movement of the adjusting element can be provided.

[0014] It is preferred if the guide is formed by slots extending in the axial direction on opposite sides of the second section. Opposing slots provide good control of the movement of the adjustment element. Furthermore, slots form openings through which a portion of the adjustment element can protrude, thus further forming a stop for limiting the movement of the adjustment element within the front sight carrier element.

[0015] In order to further improve the guidance and in particular to enable an adjustment element that is easy to manufacture, it is particularly preferred if two axially opposite threaded holes are provided for receiving the axis and the link is arranged axially centrally between these two threaded holes.

[0016] It is preferred if the outer geometry of the hollow body is angular, preferably octagonal, in the circumferential direction. A angular design creates a strong structure and, in particular, facilitates the attachment of the slotted guide. In particular, a central, i.e., symmetrical, arrangement is easily possible.

[0017] It is preferred if the first section has at least one groove at its axial end for locking the front sight. The provision of a single groove makes it possible to lock the front sight in 180° increments. It is particularly preferred if the first section has two grooves intersecting at right angles at its axial end for locking the front sight. Two grooves enable locking in 90° increments. The grooves can be angular or circular. Angular and circular grooves can also be combined. Thus, it is preferred if the groove arranged essentially axially parallel to the barrel of the weapon is circular, for example in the shape of a flat U, while for the groove arranged perpendicular to the barrel, it is preferred to provide an angular groove that is preferably slightly larger than the thickness of the front sight, in particular to prevent the front sight from accidentally slipping out.Accordingly, in this preferred embodiment, the front sight can only be moved out of the groove by pulling against the spring force and not by turning.

[0018] According to a second aspect of the invention, an axle for an adjustable, in particular folding, height-, and windage-adjustable sighting device is provided for pivotably mounting a front sight carrier element on a holding device. The axle body of the axle has a profile corresponding to the geometry of an opening of an adjustment element for transmitting a torque. The axle body further has at least one second thread for transmitting a rotational movement, wherein the second thread corresponds to at least a first thread of the front sight carrier element.

[0019] In other words, the axle according to the invention can form both a torque-transmitting and a non-torque-transmitting connection with the front sight carrier element. For this purpose, the adjustment element can be moved relative to the axle, in particular perpendicular to the axle, with and against the force of the spring element.

[0020] In the torque-transmitting connection, the front sight carrier element can be folded up or down, but not moved sideways. In the non-torque-transmitting connection, however, the front sight carrier element can be moved sideways. A rotational movement of the axially fixed axis transmits this rotational movement to the thread of the front sight carrier element, causing it to move sideways.

[0021] In a preferred embodiment, the profile is arranged on its outer circumference in the circumferential direction of the axle body. The profile, arranged in the circumferential direction and extending in particular over a specific axial region of the axle, facilitates the engagement of the first geometry and, in particular, creates a stable, torque-transmittable connection.

[0022] In a structurally simple embodiment, the profile is formed by at least two, preferably four, recesses in the axle body extending in the axial direction of the axle. It is preferred if each recess forms a surface, and each surface is offset by 90° from an adjacent surface. It has proven advantageous for adjacent surfaces not to directly touch each other, but rather for adjacent recesses in the circumferential direction to be separated by lateral surface sections of the axle body. The lateral surface sections form outwardly rounded corners, so to speak.

[0023] In particular, a profile can be provided that resembles a square in its cross-section, ensuring stable and secure torque transmission by ensuring that the torque is transmitted across the surface and not across the corner. This also increases service life. The rounded corners further facilitate the engagement of the first geometry of the keyhole-like opening of the adjustment element to establish the torque-transmittable connection.

[0024] In a preferred embodiment, the profile adjoins threaded portions of the axle body in both axial directions of the axle, so that, in other words, the profile is arranged axially between two threaded portions, namely between a first and a second threaded portion. The threaded portions are particularly intended to connect with the thread(s) of the front sight carrier element in order to transmit a rotational movement of the axle to the front sight carrier element.

[0025] In a preferred embodiment, the two threaded sections are formed into a single threaded section, i.e., the lateral surface sections form a third profile section that connects the first profile section to the second profile section, thus forming a continuous thread. In other words, the square surfaces are interrupted or separated from each other at their corners by the thread.

[0026] When using the preferred four-surface profile, the preferred process involves first cutting a thread into the axle body and then milling the surface profile. This allows the axles to be manufactured quickly, precisely, and cost-effectively, while the continuous thread also enables safe and precise adjustment of the front sight carrier element. However, it is also conceivable to mill the profile first and then cut the thread.

[0027] To secure the axle to a holding device, the axle can have a circumferential groove at one of its two ends to accommodate a locking washer or a hole to accommodate a locking pin.

[0028] In a preferred embodiment, the axle has a screw head at the other of its two ends for attaching a tool for lateral adjustment of the front sight support element. The tool used can be, for example, a screwdriver or a suitable coin or a similar tool.

[0029] In an alternative embodiment, the axle has a gripping surface at its other end, in particular a knurled or cord knob for tool-free lateral adjustment of the front sight carrier element. This embodiment has proven particularly advantageous because the lateral adjustment can be performed more quickly and without tools, which is particularly advantageous in a combat situation. For example, the lateral adjustment can be performed by pulling the front sight out of the detent against the spring force and turning the knurled or cord knob with the right hand.

[0030] According to a third aspect of the invention, an adjustment element for an adjustable sighting device, in particular a sighting device adjustable for folding, height, and windage, is provided. The adjustment element according to the invention has a first section extending in a longitudinal direction and a flat second section connected to the first section. The first section also has a means for releasably connecting to a front sight, wherein a thread arranged at an axial end of the first section is preferably provided as the means for releasably connecting.

[0031] The second section has a keyhole-like opening for the passage of an axle supporting a front sight carrier element, which axle is designed on the one hand to establish a torque-transmittable connection with the axle by means of a first geometry and on the other hand is designed to prevent the torque-transmittable connection with this axle by means of a second geometry, ie to establish a non-torque-transmittable connection with this axle.

[0032] Thus, an adjustment element is provided which, as part of the sighting device assembly, serves as a locking device for preferably three adjustment options, namely folding up or down, lateral adjustment and height adjustment.

[0033] The keyhole-like opening is particularly important for lateral adjustment, as it allows the adjustment element to be moved relative to the axis, particularly perpendicular to the axis, to bring the adjustment element either "into engagement" (engagement position) with the axis or "out of engagement" (release position) with the axis. The keyhole-like opening is not required for folding or unfolding, and for height adjustment, but is advantageous.

[0034] The engaged position corresponds to the position of the adjustment element relative to the axle in which the torque-transmitting connection is established. For example, a folded-up and folded-down front sight carrier element corresponds to this position when the front sight is in the locked position. In this position, lateral adjustment is not possible because the keyhole geometry essentially fixes the profiled surface of the axle, or in other words, would block any rotational movement of the axle.

[0035] The term "torque-transmittable connection" means that the adjustment element assumes a position or position relative to the axle in which a torque can be transmitted. This position serves primarily to prevent unintentional lateral adjustment of the front sight carrier element and thus of the front sight. If an attempt were made to rotate the axle around its own axis of rotation in this position, the keyhole-like opening of the adjustment element would exert a counter-torque and prevent lateral adjustment.

[0036] By pulling the front sight against the spring force, the adjustment element is moved to the release position. In this position, lateral adjustment of the front sight carrier element (and thus also of the adjustment element) is permitted because the non-torque-transmittable connection between the axis and the adjustment element now exists, meaning no torque can be transmitted. The axially fixed axis can now be rotated manually or using a tool. This rotational movement is transmitted via the threaded coupling to the front sight carrier, which can now be moved laterally, i.e., in the axial direction of the axis.

[0037] It is advantageous if the circular section transitions into a straight section, which in turn, after a certain axial extension, transitions into the square section. The straight section connecting the two geometries preferably runs at least partially parallel to the rotational axis of the cylindrical body of the first section. The straight section is, in particular, part of the first geometry.

[0038] The keyhole-like opening can, in particular, be designed as a through-hole that is arranged or aligned such that the axis for mounting the grain holder on the holding device can be guided through the through-hole. The keyhole-like opening can, in a sectional view, essentially be formed by two geometric shapes, in particular a circular segment and a rectangular segment. In particular, the rectangular segment can have rounded corners. However, instead of a rectangular segment, a second circular segment can also be provided.

[0039] In an advantageous embodiment of the invention, the end of the second section axially opposite the first section has rounded corners with a first radius and a second radius different from the first radius. Rounded corners with different radii allow optimal interaction between the adjusting element and the holding device. Rounded corners make it possible, particularly during an opening and closing movement of the front sight carrier, to bring the adjusting element into contact with a baffle of the holding device and to allow it to slide over the baffle. During the folding movement, contact occurs particularly against the force of the spring element, while the "sliding" occurs with the force of the spring element. In particular, when the lower edge of the second section, with its two radii, has passed the baffle, the adjusting element can "slide off," i.e., assume a locking or detent position.According to a fourth aspect of the invention, a holding device for a front sight carrier element having a spring-loaded adjustment element is provided. The holding device according to the invention has a control link that is arranged and configured to lock the adjustment element in both an open and a folded position of the front sight carrier element.

[0040] The term “link” refers to a contact surface that is firmly connected to the holding device and is suitable for absorbing the force of the spring element during a pivoting movement, i.e. during an opening and closing process, in order to allow the adjusting element to slide down with the force of the spring element and thus lock in place following the contact to complete the opening or closing process.

[0041] In a preferred embodiment, the holding device comprises a base with two arms arranged opposite one another and substantially perpendicular to the surface of the base for receiving an axis for pivotably supporting the front sight carrier element, wherein the control link is formed by a contact surface connected to the base and arranged between the arms.

[0042] The contact surface can, in particular, be arranged at an angle to the base. The contact surface can also be arranged parallel to the axis. The contact surface preferably has the geometry of a ramp, the inclined side of which faces the adjustment element. A contact surface arranged at an angle or inclined at an angle advantageously allows the sequential "engagement" of both rounded corners, i.e., the engagement of both the corner with the smaller and the larger radius.

[0043] It is preferred if the holding device is attached to a gas outlet or is formed in one piece with it.

[0044] According to a fifth aspect, an adjustable sighting device is provided, in particular for a folding, height and side adjustable sighting device for a handgun.

[0045] The sighting device comprises a front sight carrier element pivotably mounted on a holding device by means of an axis. The front sight carrier element has an adjustment element mounted on a spring element and detachably connected to a front sight, which adjustment element comprises a keyhole-like opening through which the axis passes. The adjustment element is arranged within the front sight carrier element so that it can be moved with and against the spring force between two positions relative to the axis, such that the keyhole-like opening, in an engaged position with the axis, prevents lateral adjustment of the front sight carrier element along the axis and, in a released position, allows lateral adjustment of the front sight carrier element.

[0046] In other words, the axle can form both a torque-transmitting and a non-torque-transmitting connection with the front sight carrier element. For this purpose, the adjustment element can be moved relative to the axle, particularly perpendicular to the axle, with and against the force of the spring element.

[0047] In the torque-transmitting connection, the front sight carrier element can be folded up or down, but not moved sideways. In the non-torque-transmitting connection, however, the front sight carrier element can be moved sideways.

[0048] A rotational movement of the axially fixed axis transmits this rotational movement preferably to a thread of the front sight carrier element, which causes it to move laterally.

[0049] Such a sighting device provides a mechanism by which the sighting device is secured against unintentional lateral adjustment, while allowing intentional lateral adjustment of the sighting device in a user-friendly manner.

[0050] For example, the safety can be released by pulling up the front sight with the left hand. Lateral adjustment of the shaft, i.e., to the left or right, can be achieved by rotating the shaft with the right hand. In this position, the keyhole-like opening is in the release position. "Lateral adjustment of the sighting device" refers to the lateral movement of the front sight carrier element, which causes the front sight to move to the left or right. Once the adjustment is complete, the front sight can be released. The spring element pushes the opening of the adjustment element into engagement with the shaft. In this position, lateral adjustment is not possible.

[0051] It has been found that this mechanism can be implemented in a technically simple manner, thus reducing the number of parts and complexity of a three-way adjustable sighting device. Such a sighting device is very compact and weighs less than state-of-the-art sighting devices, such as the sighting device used on the MG5 machine gun. At the same time, it features a safety mechanism for lateral adjustment that is designed to be very user-friendly. The sighting device is fundamentally suitable for a wide variety of handguns, especially machine guns and assault rifles.

[0052] It has been found that the sighting device according to the invention has significantly fewer components than, for example, the sighting device known from the MG5 machine gun.

[0053] It is preferred if the keyhole-like opening is designed as a through-hole that is arranged or aligned such that the axis for mounting the grain holder on the holding device can be passed through the through-hole. The keyhole-like opening can, in a sectional view, be formed essentially by two geometric shapes, in particular by a circular segment with a straight segment and a square segment, wherein in particular a diameter of the square segment is larger than a diameter of the straight segment or the circular segment.

[0054] A sighting device is preferred if the axle body of the axle has a profile corresponding to the geometry of the opening of the adjustment element, which is designed in such a way that in the engaged position of the adjustment element, when an attempt is made to rotate the axle, a moment is generated which prevents lateral adjustment and in the release position of the adjustment element the lateral adjustment is permitted.

[0055] A sighting device is preferred if the profile of the axle is adjacent to threaded sections of the axle body in both axial directions, with the threaded sections corresponding to threaded holes in the front sight carrier element. The threaded coupling allows for optimal transmission of rotational movement of the axially fixed axle to the front sight carrier element.

[0056] It is preferred if the front sight carrier element has a guide for guiding the adjustment element so that a better, controlled movement of the adjustment element can be provided.

[0057] It is preferred if the holding device has a control link which is arranged and designed to lock the adjusting element in both an opened and a folded-down position of the front sight carrier element.

[0058] The sighting device can be used, for example, with a front sight carrier element as described above. The sighting device can be used, for example, with an axis as described above. The sighting device can be used, for example, with an adjustment element as described above. The sighting device can be used, for example, with a holding device as described above.

[0059] The sighting device can be used in particular with the above-described front sight carrier, the above-described axis, the above-described adjustment element and the above-described holding device.

[0060] Thus, it is preferred if the sighting device comprises an adjustment element as described above, which is mounted within a front sight carrier element as described above by means of a spring element and is releasably connected to a front sight. Furthermore, the sighting device comprises a holding device as described above, on which the front sight carrier element and the adjustment element are pivotably mounted by means of an axis as described above.

[0061] It is preferred if the spring element is supported on a stop of the front sight carrier element and exerts a force on the adjustment element to hold the front sight in a detent or locked position. It is particularly preferred if the spring element is supported at one axial end on the end face of the projection of the front sight carrier element and at its other axial end bears against a contact surface of the second section of the adjustment element.

[0062] It is further preferred if the front sight can be transferred by means of a pulling movement against the spring force from its locking position, in which a rotational movement of the front sight is prevented, into a rotational position in which a rotation of the front sight is permitted for height adjustment.

[0063] Furthermore, it is preferred if pulling the front sight out of its locking position causes the opening of the adjustment element to move relative to the axis, such that the adjustment element can be moved from a torque-transmittable connection with the axis into a non-torque-transmittable connection with the axis for lateral adjustment of the front sight carrier element, and the lateral adjustment of the front sight carrier element in the position of the non-torque-transmittable connection can be effected by rotating the axis axially fixed to the holding device, wherein the rotational movement of the axis is transmitted to the front sight carrier element via the threaded coupling of the axis to the front sight carrier element, such that the latter is moved laterally.

[0064] It is further preferred if, during the pivoting movement for folding up or down the front sight carrier element, the second section of the adjusting element can be brought at least partially into contact with the baffle of the holding device, so that the adjusting element can be moved against the force of the spring element, wherein upon contact with the baffle, a movement of the adjusting element against the force of the spring element is only permitted in such a way that the moment-transmitting connection between the axis and the front sight carrier element is always maintained during the pivoting movement.

[0065] According to a sixth aspect of the invention, a handgun, in particular a machine gun or an assault rifle, is provided which is equipped with a sighting device as described above. Character list

[0066] Embodiments of the invention are explained in more detail below with reference to the attached schematic drawings:

[0067] The drawings show: Fig. 1 shows a front sight in several views, which can be detachably connected to an adjustment element and can be used in a sighting device; Fig. 2 shows a front sight carrier element in a preferred embodiment from three perspectives and a sectional view; Fig. 3 shows an axis for pivoting the front sight carrier element from Fig. 2 in a preferred embodiment from two perspectives; Fig. 4 an adjusting element in a preferred embodiment from two perspectives; Fig. 5 a holding device for receiving and supporting the axle from Fig. 3in a preferred embodiment from two perspectives and a sectional view; Fig. 6 a sighting device in a preferred embodiment from two perspectives; Fig. 7 the sighting device from Fig. 6 in two sectional views; Fig. 8 the axis from Fig. 3 in a second preferred embodiment; Fig. 9 the sighting device from Fig. 6 or 7 in the unfolded position in a first snapshot t1 in a sectional view; Fig. 10 the sighting device from Fig. 9 during a pivoting in a second and third snapshot (t2, t3) in a sectional view; Fig. 11 the sighting device from Fig. 9 in folded position in a fourth snapshot (t4) in a sectional view; Fig. 12 the sighting device from Fig. 6 or 7 in the unfolded position in the first snapshot (t1) at the beginning of a lateral adjustment in two sectional views; Fig. 13 the sighting device from Fig. 12with the front sight pulled out in a fifth snapshot (t5) in two sectional views; Fig. 14 the sighting device from Fig. 12 in a sixth and seventh snapshot (t6, t7) after completion of the lateral adjustment in three sectional views; Fig. 15 the sighting device from Fig. 9 in the first snapshot (t1) at the beginning of a height adjustment and in an eighth snapshot (t8) with a front sight pulled out of the locking position and rotated from two perspectives and in two sectional views; Fig. 16 the sighting device from Fig. 15 in the eighth snapshot (t8) and in a ninth and tenth snapshot (t9, t10) after completion of the height adjustment from three perspectives; Fig. 17 shows a section of the sighting device, in particular the engagement of the axis and the adjustment element, from a perspective with a cutout; and Fig. 18 shows a handgun with the sighting device according to the invention in a side view.

[0068] The structure and function of the adjustable sighting device for a handgun, or rather the handgun with such a sighting device, are explained below with reference to the figures. The figures show preferred embodiments of the invention. The structure and function are explained in particular with reference to a folding, height- and windage-adjustable sighting device.

[0069] The reference symbols are not inserted consistently throughout all figures to avoid compromising clarity. However, the same reference symbols apply to all figures.

[0070] Figure 1 shows a front sight 10 for a folding, height and side adjustable sighting device 70 with a section 11 for receiving an adjusting element 40 ( Fig. 4), wherein the section 11 further has a thread 12 that corresponds to a thread of the adjustment element 40. The section 11 extends in a longitudinal direction and has a blind hole-shaped recess 13 with an internal thread for receiving the adjustment element 40, which corresponds to an external thread of the adjustment element 40. The front sight is designed as a roof sight. However, other shapes are also conceivable.

[0071] Fig. 2 shows a front sight carrier element 20 designed as a front sight carrier or front sight carrier in a preferred embodiment for a folding, height and side adjustable sighting device.

[0072] The front sight carrier element 20 has a hollow-shaped body 21 with a first section 22 for receiving a front sight 10 and a second section 23 connected to the first section 22 for receiving an adjustment element 40 that can be releasably connected to the front sight 10 and a spring element 75. The two sections 22, 23 are separated in the hollow space by a radially inwardly extending and circumferential projection 24, which has a through-opening 24c in its center.

[0073] A part of the adjustment element can protrude or be guided through the opening 24c from the second section into the first section, so that a movement of the adjustment element 40 within the first and second sections 22, 23 of the front sight carrier element 20 in the axial direction is permitted.

[0074] The circumferential projection 24 has on its underside, ie in the direction of the axis 30 (not shown) Fig. 3), an end face 24a which serves as a contact surface for the spring element 75 (not shown) Fig. 7 ). The projection 24 has on its upper side, ie in the direction of the front sight 10 (not shown), an end face 24b which serves as a limiting element for the front sight 10, ie the front sight 10 can come into contact with the surface 24b with its axial end of the section 12. When the sighting element 10 comes into contact with the surface 24b, the front sight 10 is at the minimum adjustable height.

[0075] The front sight carrier element 20 further comprises two threaded bores 27, 29, which are arranged at the lower end of the second section 23. Through these two bores 27, 29, the axis 30 (not shown) for supporting the front sight carrier element 20 on the holding device 50 (not shown) can be inserted. Fig. 5). Via these threaded holes 27, 29, a rotational movement can also be transmitted from the axis 30 to the front sight carrier element 20, so that the latter can be adjusted laterally. In order to provide a secure and robust front sight carrier 20, the areas around the threaded holes 27, 29 are reinforced for this reason. The rearward-facing end of the threaded portions 27, 29 has a circular section, i.e., a radius r3, to enable folding up and down without the front sight carrier element 20 coming into contact with the holding device 50 or the gas outlet 60.

[0076] The front sight carrier element 20 further has a guide 28 at the axial end of the second section 23 for guiding the adjustment element 40. The guide 28 is formed by slots extending in the axial direction on opposite sides of the second section 23. In other words, the guide 28 separates the second section 23 into two arms 23a, 23b, each of which has one of the threaded bores 27, 29, with the slots being arranged symmetrically between these two bores 27, 29.

[0077] Not further specified, but clearly visible, is that the outer geometry of the hollow body 21 is octagonal in the circumferential direction and has an H-profile.

[0078] At the upper end of the first section, two grooves 25, 26 intersecting at right angles are arranged for locking the front sight 10. According to this embodiment, these grooves are square and each have the same dimensions, allowing the front sight to be rotated and locked in 90° segments. However, other geometries are also possible. In particular, a so-called flattened U-profile is conceivable, which is aligned parallel to the barrel of the weapon, i.e., in the direction of the shooter's line of sight.

[0079] Fig. 3 shows an axis 30 in a preferred embodiment for an adjustable sighting device 70 for pivotally mounting the Fig. 2 known sight carrier element 20 on a holding device 50 ( Fig. 5 ).

[0080] The axle body 31 of the axle 30 has a profile 32 which, with a first geometry 45, 45a, corresponds to an opening 44 of the adjusting element 40 ( Fig. 4) and via which a moment can be transmitted from the axle 30 to the front sight carrier element 20 and vice versa. The axle body further has a first threaded portion 38a and a second threaded portion 38b, which can transmit the rotational movement of the axle to the front sight carrier element 20 in order to move the front sight carrier element laterally.

[0081] The profile 32 is arranged axially between the two threaded sections 38a, 38b, or the profile 32 borders the threaded sections 38a, 38b of the axle body 31 in both axial directions. The threaded sections 38a, 38b extend in the axial direction along the sections s2 and s3, respectively, as clearly visible in the figure below.

[0082] The two thread sections 38a, 38b are connected by another thread section or thread 38c, so that these three thread sections 38a, 38b, 38c form a single, continuous thread. In the figure below, the thread 38c is represented by a line drawing (bottom right to top left). The thread 38c runs axially between the axial sections s2 and s3 and along or on the shell surface sections 34. The thread 38a, 38b, 38c is a fine-pitch thread, i.e., a thread with a narrow profile and a small pitch.

[0083] The profile 32 is formed by four recesses 33 arranged in the circumferential direction in the shape of surfaces, with each surface being offset by 90° from an adjacent surface. In other words, the profile 32 of the axle 30, viewed in cross-section, is designed as a type of square nut. The profiled surface 32, i.e., the four surfaces 33, are threadless; only the sections 34, the lateral surface sections between the respective surfaces 33, are equipped with the thread 38c.

[0084] At one of its two ends, the axle 30 has a circumferential groove 35 for receiving a locking washer. At its other end, the axle 30 has a screw head 36. A tool, such as a screwdriver or a coin, can be attached to this screw head for lateral adjustment of the front sight carrier element 20.

[0085] Starting from the circumferential groove 35, sections s1, s2, profile 32, s3, s4, and screw head 36 follow in the axial direction. Sections s1 and s4 are those sections of the axle body 21 which are received in the bore of the holding device 50. Sections s2 and s3 are provided with the thread 38a, 38b and - in a central position of the front sight carrier element - engage with the corresponding threaded bore 27, 29. If the front sight carrier element 20 is rotated to the left or right from the central position, the threaded section 38c can also be brought into engagement with the threaded bores 27 or 29.

[0086] It is clearly visible that the diameter of section s1 is smaller than the diameter of section s4. Since the bores of the holding device 50 correspond to these diameters, they also have correspondingly different sizes. This means that the axle 30 can always only be inserted into the holding device 50 from the same side, in this case from the right side. The diameters of sections s2, s3, and s4 are essentially the same. Also clearly visible is the flattened recess 33 axially between sections s2 and s3.

[0087] Fig. 4 shows an adjustment element 40 in a preferred embodiment for an adjustable sighting device. The adjustment element 40 is shown in a folded-out position and can be pivoted through an angle α and thus folded down. The degree of pivotability is approximately 90° in order to be transferred from the folded-out position to a horizontal position.

[0088] The adjusting element has a first section 41 extending in a longitudinal direction and a flat second section 42 which is connected to the first section 41. The first section is cylindrical and has a thread 43 at its end for detachable connection to the Fig. 1 known front sight 10. The cylindrical section (including threaded section 43) is approximately eight times the diameter.

[0089] The second section 42 is flat and planar and has a substantially rectangular shape with a length l, a width b, and a thickness or depth t. The width b is approximately four times greater than the thickness t. The length l is approximately 1.5 times as large as the width b. The first section 41 is approximately twice as long as the second section 42. The second section 42 further has rounded or flattened corners r1, r2, which will be discussed below.

[0090] One of the two short sides of the second section 42 is centrally connected to the end face of the cylindrical first section 41 opposite the thread 43. This side is the top side of the quadrilateral or the second section 42. The thickness t of the second section 42 corresponds approximately to the diameter of the cylindrical section 41. The second section 42 further has a contact surface 42a on its top side, against which a spring element 75, guided coaxially to the first section 41, is supported or against which the spring element 75 can be brought into contact.

[0091] The adjustment element therefore schematically represents approximately the geometry of a key blank.

[0092] According to the invention, the second section 42 has a keyhole-like opening 44 through which the axis of Fig. 3 can be guided to remove the grain carrier 20 from Fig. 2 to store.

[0093] The keyhole-like opening 44 is designed as a through-hole and is essentially formed by two geometric shapes, namely a circular segment 45 having a straight section 45a and a rectangular segment 46 with rounded corners. The circular segment 45 with diameter d1 is arranged above the rectangular segment 46 with diameter d2, wherein diameter d1 is smaller than diameter d2.

[0094] It is advantageous if the circular section 45 transitions into a straight section 45a with the same diameter d1, which in turn, after a certain axial extension downwards, transitions into the square section 46. The straight section 45a, which connects the two geometries, runs at least partially parallel to the axis of rotation of the cylindrical body of the first section 41. In the torque-transmitting position, the straight section 45a acts like a "square wrench" that grips a "square nut." The straight section 45a is, in particular, part of the first geometry 45.

[0095] The through hole 44 is functionally suitable for establishing a torque-transmitting connection with the axle 30 by means of the circular segment-shaped geometry 45 and for releasing this connection by means of the rectangular geometry 46 to allow lateral adjustment of the grain carrier 20. To establish the respective position or connection, the adjustment element 40 can be moved perpendicular to the axle 30. Thus, either the circular section 45, 45a or the rectangular section 46 can be brought into an "engagement position" or a "release position" with the profile 32 of the axle 30. To create a structurally simple solution, the diameter d1 is selected such that it is minimally smaller than the diameter of the axle body 31, so that the straight sections 45a can optimally encompass the straight surface profile 32, 33.

[0096] As already mentioned above, the adjusting element 40 has rounded corners at its lower end with a first radius r1 and a second radius r2 that is different from the first radius r1. In a folded-out position, the side with the small radius r1 faces the mouth, i.e., forwards, while the large radius r2 faces rearwards. In a folded-down position, the side with the small radius r1 points upwards, while the side with the large radius r2 points downwards and is in contact with the holding device 50. This geometry has proven particularly advantageous in conjunction with the holding device 50, which will be discussed below.

[0097] Fig. 5 shows a holding device 50 in a preferred embodiment for the sight carrier element according to Fig. 2 with an integrated adjustment element according to Fig. 4The holding device 50 is attached to a gas intake 60. The holding device has a base 52 or a floor with a frame 52a. The frame 52a forms a recess with the base 52, into which a portion of the adjustment element 40 projects during a pivoting movement. Two arms 53, 54 are arranged opposite one another and substantially perpendicular to the surface of the base 52 for receiving the axis 30 for pivotably supporting the front sight carrier element 20.

[0098] During the up or down movement, the adjusting element 40 comes into contact with the base 52 and with a control link 51 attached to the base 52 or the frame 52a. However, due to the spring-loaded arrangement of the adjusting element 40, it can pass through the base 52 and the control link 51 against the force of the spring element 75. In the unfolded position, the adjusting element 40 is pressed into the base 52 by the spring element 75.

[0099] By means of the control link 51 or contact surface, the adjustment element 40 can be locked in both the open and the folded position of the front sight carrier element 20. The contact surface 51 is arranged at an angle to the base 52 and parallel to the axis 30 and has the geometry of a ramp, the slanted side of which faces the adjustment element 40. A ramp angle of approximately 60° to 75° has proven particularly advantageous for enabling secure locking.

[0100] The holding device 50 further comprises a fixed stop 55 on which the front sight carrier element 20 is supported in a folded-down position.

[0101] Fig. 6shows an adjustable sighting device 70 in a preferred embodiment in the design of a folding, height and side adjustable sighting device comprising a front sight carrier element 20 which is pivotally mounted on a holding device 50 by means of an axis 30, wherein the front sight carrier element 20 has an adjusting element 40 which is mounted on a spring element (not shown) and detachably connected to a front sight 10 and which comprises a keyhole-like opening (not shown) through which the axis 30 is guided.The adjustment element 20 is arranged within the front sight carrier element 20 so as to be movable with and against the spring force between two positions relative to the axis 30, so that the keyhole-like opening prevents a lateral adjustment of the front sight carrier element 20 along the axis 30 in an engagement position with the axis and allows the lateral adjustment of the front sight carrier element 20 in a release position.

[0102] The sighting device 70 comprises the adjustment element 40 made of Fig. 4 , which is within the front sight carrier element 20 Fig. 2 stored and with the sight front sight 10 after Fig. 1 is detachably connected. The sighting device 70 further comprises the holding device 50 according to Fig. 5 , on which the sight carrier element 20 and the adjustment element 40 by means of the axis 30 Fig. 3are pivotally mounted. The axis 30 is axially fixed to the holding device 50 by means of a locking washer 35a. The holding device 50 is part of the gas take-off 60. The gas take-off 60 is secured to the barrel 80 of the weapon by means of a rivet 61.

[0103] It is also clearly visible how the second section 42 of the adjustment element 40 is guided in the slots 28 of the front sight carrier element 20. The lower side of the second section 42 of the adjustment element 40 is supported on the base 52, i.e., the base 52 exerts a counter-torque on the adjustment element 40, which is subjected to a spring force.

[0104] Fig. 7 shows the sighting device 70 of the Fig. 6 in two sectional views in a folded-up and swung-out position. The front sight 10 or the front sight carrier 20 can be swung in, i.e., folded down, to the rear about a pivot axis designed as an adjustment axis.

[0105] Fig. 7further shows how a spring element 75, designed as a compression spring, is supported on the contact surfaces 24a, 42a of the front sight carrier element 20 and the adjustment element 40, respectively. Since the front sight carrier element 20 is mounted on the axis 30, a force F is always exerted on the second section 42 to hold the front sight 10 in its detent or locked position. The sighting device 70 is in the unfolded position; the force F therefore acts downward and presses the first geometry 45, 45a of the opening 44 into the profile 32 of the axis 30.

[0106] Fig. 8 shows a sighting device 70 with an alternative axis 30, in which a knurled knob 37 is provided instead of a screw head for tool-free lateral adjustment of the front sight carrier element 20. Otherwise, the structure corresponds to that of the Fig. 6 or 7.

[0107] The Figures 9 to 12show the pivoting process from the unfolded position to the folded position. Fig. 9 represents the starting point of the folding process at a time t1. The compression spring 75 presses the adjustment element 40 downward. The adjustment element 40, in turn, rests on the horizontal surface of the base 52 of the holding device 50. Via the small corner radius r1 on the right-hand side, the adjustment element 40 rests on the inclined contact surface 51 of the holding device 50. This, on the one hand, prevents the front sight carrier element 20 from folding over during firing and, on the other hand, creates play compensation so that the front sight carrier element 20, and thus in particular the front sight 10, does not wobble. The adjustment path, as the pivoting movement of the front sight carrier element 20, is limited to the rear by a fixed stop 55.

[0108] The Fig. 10shows two snapshots at time t2 and the subsequent time t3. At time t2, the small radius r1 slides over the inclined contact surface 51 of the holding device 50 when the adjusting element 40 is folded over. As a result, the adjusting element 40 is pushed upwards against the spring force F (shown by straight arrows).

[0109] At time t3, the front sight carrier element 20 is folded down further. The larger radius r2 on the left side of the adjustment element 40 comes into contact with the base 52 of the holding device 50, while the smaller radius r1 is disengaged, i.e., no longer has contact with the ramp 51. The adjustment element 40 is still raised slightly against the spring force. Due to the keyhole-like geometry of the through hole 44, the axis 30 for lateral adjustment of the front sight 10 is rotated via the profile 32 attached to the axis 30. By moving the axis 30 when the front sight 10 is folded down or opened, it is ensured that its position does not change laterally.

[0110] Fig. 11shows the sighting device 70 in the folded position at a fourth time t4. In the folded position, the front sight carrier element 20 rests horizontally on the gas intake 60 connected to the holding device 50 via the fixed stop 55. For locking, the large radius r2 of the adjustment element 40 engages the ramp 51 of the holding device 50.

[0111] The front sight 70 or the front sight carrier element 20 can be opened and closed without having to "tighten" the front sight 10. In the closed position, the radius R2 and the ramp 51 act together as a locking mechanism, such that the front sight holder 20 is held in this locked position (downward) during firing. With slightly increased force, the front sight carrier element 20 can be released from this locked position and opened without additionally pulling the front sight 10. Thus, the opening process proceeds in the reverse order of the folding process.

[0112] Accordingly, during the pivoting movement for folding the front sight carrier element 20 up or down, the second section 42 of the adjustment element 40 can be brought at least partially into contact with the baffle 51 of the holding device 50, so that the adjustment element 40 can be moved against the force of the spring element 75. Upon contact with the baffle 51, movement of the adjustment element 40 against the force of the spring element 75 is only permitted in such a way that the torque-transmitting connection between the axis 30 and the front sight carrier element 20 is always maintained during the pivoting movement.

[0113] According to the Fig. 9 to 11 In the preferred embodiment shown, the adjusting element 40 is in the unfolded state ( Fig. 1 ) comes into contact with the floor 52. The locking function is essentially performed by the ramp 51.

[0114] Alternatively, it is conceivable to place the floor 52 somewhat lower so that the adjustment element 40 does not come into contact with the floor 52 when unfolded. In this case, the ramp 51 also limits the downward travel of the adjustment element 40.

[0115] The Figures 12 to 14 show the process of lateral adjustment of the front sight carrier element 20 or the front sight 10. Fig. 12 shows the sighting device 70 in the Fig. 9 known starting position: the front sight 10 is in the middle position and opened position.

[0116] For side adjustment, as in Fig. 13At a time t5, the front sight 10 is pulled upwards by the adjustment element 40 against the spring force. In the upper position, the square section 46, i.e., the "square wrench" of the keyhole-shaped through-opening 44, releases the profile 32, i.e., the square nut of the axle 30 for lateral adjustment. The axle 30 can now be rotated (using a tool). The axle 30 is fixed axially in the holder device 50 and thus to the gas outlet 60 via a locking washer 35a. The rotational movement of the axle 30 is transmitted to the front sight holder 20 via the threaded coupling of the thread pairs 27, 29 and 38a, 38b, respectively, causing it to be axially displaced or laterally adjusted.

[0117] If the desired position is reached by lateral adjustment of the front sight holder 20, as shown in Fig. 14As shown, the front sight 10 can be released. The spring force pushes the front sight 10 downward with the adjustment element 40. The profile 32 (square nut) of the axle 30 engages with the first geometry 45, 45a (square wrench) of the keyhole-like through-opening 44 of the adjustment element 40 and is thus locked.

[0118] Fig. 14At a time t6, the end position of the lateral adjustment is to the left, while at a time t7, the end position of the lateral adjustment is to the right. Accordingly, pulling the front sight 10 out of its locking position causes the opening 44 of the adjustment element 40 to move relative to the axis 30, such that the adjustment element 40 is moved from a torque-transmittable connection with the axis 30 to a non-torque-transmittable connection with the axis 30 for the lateral adjustment of the front sight carrier element 20. Furthermore, the lateral adjustment of the front sight carrier element 20 in the position of the non-torque-transmittable connection can be effected by rotating the axis 30 axially fixed to the holding device 50, wherein the rotational movement of the axis 30 is transmitted to the front sight carrier element 20 via the threaded coupling 27, 29 or 38a, 38b of the axis 30 with the front sight carrier element 20 in such a way that the latter is moved laterally.

[0119] The Fig. 15 and 16 show the process of adjusting the height of the sighting device 70. In the initial position at time t1, the front sight 10 is locked by the groove in the front sight holder 20. To adjust the height, the front sight 10 must be pulled upwards with the adjustment element 40 against the force of the compression spring 75. In the upper position, the front sight 10 can now be rotated, as shown at time t8. The front sight height is adjusted by manually rotating the front sight about its own axis via the threads 12, 43 between the front sight 10 and the adjustment element 40. If the front sight 10 is then released at time t9, it is locked in the groove of the front sight holder 20 by the spring return, as shown in Fig. 16 at time t10. Times t9 and t10 show the front sight 10 in its upper and lower end positions, respectively.

[0120] The front sight 10 can therefore be moved by means of a pulling movement against the spring force from its locking position, in which a rotational movement of the front sight 10 is prevented, into a rotational position in which a rotation of the front sight 10 is permitted for height adjustment.

[0121] Fig. 17 shows a further illustration of the functioning of the keyhole-like opening 44 with the profile 32 of the axis 30 in a perspective, wherein a part of the sighting device 70 is cut free.

[0122] On the left is shown the unfolded position as seen from Fig. 9 , 12 and 14The compression spring 75 presses the adjustment element 40 downward, whereby the first geometry 45, 45a engages with the profile 32 of the axle 30. The second section 42 is also pressed into the base 52 of the holding device 50. It is clearly visible how the straight sections 45a lie parallel and tightly against the flat sections 32 or engage around them, like a square wrench engages around a square nut.

[0123] On the right is shown the raised position, as already shown in Fig. 13 and 15 is known. The front sight 10 pulls the adjustment element 40 upwards against the force of the spring 75, whereby the axis 30 is now surrounded by the second geometry. The second geometry 46 has a larger diameter and allows a rotational movement of the fixed axis 30 about its own axis of rotation.

[0124] Fig. 18shows a side view of a handgun 1 with the above-described sighting device 70. The handgun 1 includes a rear sight device with a rear sight 80 that complements the sighting device. The sighting device 70 and rear sight device 80 are shown in their unfolded state.

[0125] In this case, the handgun 1 is designed as an automatic weapon in the form of a machine gun (MG5). The MG5 is an indirect gas-operated loader in 7.62 x 51 mm caliber. The MG5 essentially comprises the following assemblies or elements: the weapon barrel 2 with the gas intake 60 mounted thereon and a muzzle brake 3; a weapon housing 4 into which the weapon barrel 2 is inserted; and a grip 5 mounted on the weapon housing 4. A loading device 6 and a bolt assembly are also provided in the weapon housing 4. The weapon 1 further comprises a shoulder stock 7. The MG5 further comprises mounting rails for accommodating optics, optronics, and accessories, and a bipod 8 mounted on the gas intake 60.

[0126] The individual assemblies or components, as well as their function, are known per se—with the exception of the sighting device 70 according to the invention. Further features of the MG5 machine gun need not be discussed in the context of this invention, as they are not essential to the invention. The invention is not limited to a specific type of handgun, but can be provided for a variety of different handguns. In particular, existing handguns, especially machine guns and assault rifles, can be retrofitted with a sighting device described above. In particular, the sighting device according to the invention can be combined with known rear sights.

[0127] Further embodiments of the invention will become apparent to those skilled in the art within the scope of the following aspects, claims and attached drawings.

Claims

1. A folding, height-adjustable and laterally adjustable sighting apparatus (70) for a handgun (1) having a bearing axis (30), a front sight carrier element (20), a holding device (50) and an adjusting element (40) having an opening (44), wherein the axis (30) is used for pivotably mounting the front sight carrier element (20) on the holding device (50), wherein the axis body (31) of the axis (30) has a profile (32) corresponding to the geometry of an opening (44) of an adjusting element (40) for the transmission of a torque, and at least one second thread (38a, 38b) corresponding to a first thread (27, 29) of the front sight carrier element (20) for transmitting a rotary movement.

2. The sighting apparatus (70) according to claim 1, characterized in that the profile (32) is arranged on its outer circumference in the circumferential direction of the axis body (31).

3. The sighting apparatus (70) according to claim 1 or 2, characterized in that the profile (32) is formed by at least two, preferably four recesses (33) in the axis body (31), extending in the axial direction of the axis (30).

4. The sighting apparatus (70) according to claim 3, characterized in that a respective recess (33) forms a surface and a respective surface is arranged at 90° to an adjacent surface, wherein recesses (33) that are adjacent in the peripheral direction are preferably separated by shell surface portions (34) of the axis body (31) .

5. The sighting apparatus (70) according to any of claims 1 to 4, characterized in that the profile (32) is adjacent in both axial directions to threaded portions (38a, 38b) of the axis body (31), wherein the shell surface portions (34) preferably form a profile portion (38c) which connects a first profile portion (38a) to a second profile portion (38b) in such a manner that a continuous thread is formed.

6. The sighting apparatus (70) according to any of claims 1 to 5, wherein the front sight carrier element (20) is pivotally mounted on a holding device (50) by means of the axis (30), characterized in that the front sight carrier element (20) has the adjusting element (40) which is mounted on a spring element (75) and is detachably connected to a front sight (10) and which comprises a keyhole-like opening (44) through which the axis (30) is passed, wherein the adjusting element (40) is arranged within the front sight carrier element (20) in such a manner that it can be moved between two positions relative to the axis (30) with and against the spring force, so that the keyhole-like opening (44) in a position of engagement with the axis prevents lateral displacement of the front sight carrier element along the axis and in a release position allows lateral displacement of the front sight carrier element (20).

7. The sighting apparatus (70) according to claim 1 or 6, characterized in that the opening (44) is designed as a through-hole.

8. The sighting apparatus (70) according to claim 1, 6 or 7, characterized in that the keyhole-like opening (44), in a sectional view, is substantially formed by two geometric shapes, in particular by a circular portion (45) having a straight portion (45a) and a quadrangular portion (46), wherein a diameter (d2) of the quadrangular portion (46) is greater than a diameter (d1) of the straight portion (45a) or of the circular portion (45), respectively.

9. The sighting apparatus (70) according to any of claims 1, 6 to 8, characterized in that the axis body (31) of the axis (30) has a profile (32) corresponding to the geometry of the opening (44) of the adjusting element (40), which is designed in such a manner that in the engagement position of the adjusting element (40) a moment is generated which prevents the lateral adjustment and in the release position of the adjusting element (40) the lateral adjustment is permitted.

10. The sighting apparatus (70) according to claim 9, characterized in that the profile (32) of the axis (30) is adjacent to threaded portions (38a, 38b) of the axis body (31) in both axial directions, wherein the threaded portions (38a, 38b) correspond to threaded holes (27, 29) of the front sight carrier element (20).

11. The sighting apparatus (70) according to any of claims 1 or 6 to 10, characterized in that the front sight carrier element has a slot (28) for guiding the adjusting element (40).

12. The sighting device (70) according to claim 1 or 6 to 11, characterized in that the adjusting element (40) has a first portion (41) extending in a longitudinal direction and a second portion (42) formed in a plane and connected to the first portion (41), wherein the first portion (41) has a means (43) for releasably connecting to a front sight (10), wherein the second portion (42) has a keyhole-like opening (44) for the passage of an axis (30) supporting a front sight carrier element (20), wherein the opening (44) is designed, on the one hand, to establish a torque-transmitting connection with the axis (30) by means of a first geometry (45, 45a) and, on the other hand, is designed to prevent the torque-transmitting connection with this axis (30) by means of a second geometry (46).

13. The sighting apparatus (70) according to claim 12, characterized in that the opening (44) in the adjusting element (40) is designed as a through-hole.

14. The sighting apparatus (70) according to any of claims 12 or 13, characterized in that the keyhole-like opening (44) in the adjusting element (40), in a sectional view, is substantially formed by two geometric shapes, in particular by a circular portion (45) having a straight portion (45a) and a quadrangular portion (46), wherein a diameter (d2) of the quadrangular portion (46) is larger than a diameter (d1) of the straight portion (45a) and the circular portion (45), respectively.

15. A handgun (1), in particular a machine gun or an assault rifle, characterized in that it is equipped with a sighting apparatus (70) according to any of claims 1 to 14.