Interchangeable grip back for a firearm and firearm equipped with an interchangeable grip back

Abstract

The invention relates to an interchangeable grip back (7) for mounting on and dismounting from a firearm (1), wherein the interchangeable grip back (7) comprises at least one coupling interface (45) for receiving at least one movable weapon component (55, 57, 59, 60), in particular the trigger mechanism. The invention also relates to a firearm (1) having at least one such interchangeable grip back (7). The invention further relates to a set comprising at least one firearm (1) and at least one interchangeable grip back (7) or at least two interchangeable grip backs (7).

Description

[0001] Interchangeable grip back for a firearm and firearm equipped with an interchangeable grip back

[0002] Field of the invention

[0003] The present invention relates to an interchangeable grip back for a firearm and to a firearm equipped with such an interchangeable grip back according to the preambles of claims 1 and 13.

[0004] Furthermore, the invention relates to a set comprising at least one firearm and at least one interchangeable grip back or at least two interchangeable grip backs.

[0005] In these documents, position designations such as “top”, “bottom”, “front”, “rear”, etc. refer to a firearm or self-loading firearm in which the bore axis is horizontal and the shot is fired forward away from the shooter.

[0006] State of the art

[0007] Interchangeable back grips and / or interchangeable side panels for firearms or self-loading firearms and firearms equipped therewith, for example pistols, self-loading pistols, submachine guns, assault rifles, precision rifles, etc., are known in various designs.

[0008] Interchangeable backstrap and side panels are available in various sizes and dimensions to adapt the firearm to different hand sizes, thus improving ergonomics. This measure ensures that a shooter can comfortably and safely reach the trigger of a pistol or other firearm.

[0009] As early as the end of the 19th century, two lateral grip panels and a backrest made of hardwood were inserted into the respective grip to produce an ordinance revolver handle.

[0010] Nowadays, suitable plastic or other suitable materials are used for interchangeable grip backs and / or handle scales. Die casting, injection molding, or other suitable manufacturing processes allow for cost-effective production of large quantities with consistently high dimensional accuracy.

[0011] For example, from EP 0 729 004 Bl, pistols are known whose interchangeable grip backs differ from one another due to different surface finishes.

[0012] The applicant's EP 1866596 B1 discloses an interchangeable backstrap with interchangeable side panels. The backstrap and / or backstrap can be slid onto the grip via an undercut tongue-and-groove connection.

[0013] AT 518635 Bl features an interchangeable plastic grip back and grip cheeks. The interchangeable grip cheeks slide onto the grip using a sliding guide.

[0014] EP 2 685 202 Bl discloses an interchangeable grip back for a firearm, which can be mounted on a projection on the grip via a snap mechanism.

[0015] EP 3 063 493 Bl discloses another interchangeable grip back for a firearm which can be mounted on the grip via a cam mechanism.

[0016] Furthermore, US 10,041,759 B2 discloses an interchangeable backstrap for a Makarov pistol, which is designed to be screwed onto the grip. Finally, hammerless self-loading pistols—also called striker-fired pistols—are also known. When loading these pistols, the slide is released from its rearward position, and the recoil spring drives the slide forward. A catch—also called a trigger lever—catches the firing pin in the grip, preventing it from sliding forward with the slide. The advancing slide compresses the firing pin spring within it. When the shooter pulls the trigger mechanism in the grip, this releases the pre-tensioned firing pin.

[0017] In a cocking trigger system, however, the trigger pull can fully or partially cock the firing pin spring in addition to the firing pin release function.

[0018] Task and solution of the invention

[0019] Against this background, the object of the invention is to provide an alternative, structurally simple and functionally reliable interchangeable grip back for firearms, in particular self-loading firearms.

[0020] This problem is solved by the subject-matter of independent claims 1, 13 and 15, respectively.

[0021] The generic interchangeable grip back thus additionally has the following features: it comprises at least one coupling interface for receiving and / or mounting at least one movable weapon component, in particular a movable weapon component of the trigger mechanism.

[0022] The firearm according to claim is characterized in that it is equipped with such an interchangeable grip back.

[0023] A set according to claim 15 is characterized in that it comprises at least one firearm and at least one interchangeable grip back, or at least two interchangeable grip backs. The invention enables a compact design of a firearm, in particular a self-loading pistol, since at least one movable weapon component, preferably a part of the trigger mechanism, can be at least partially relocated from the grip into the coupling interface of the grip back.

[0024] Additionally or alternatively, the movable weapon component, such as a trigger component, a striker, a hammer, or the like, can be mounted in or on the coupling interface using suitable fastening measures, e.g., via a bearing axis extending transversely to the firing direction through the coupling interface. The trigger latch and / or sear, for example, can also be mounted and / or mounted there.

[0025] These measures are particularly important for optimizing the ergonomics of a compact pistol (CC), as their small dimensions typically render them inferior to full-size pistols in terms of ergonomic properties. Recoil control is also often unsatisfactory in compact pistols, which consequently reduces firing accuracy.

[0026] The invention is intended in particular for the applicant's compact self-loading pistol SFP9 CC, but can be used with any firearm or self-loading firearm.

[0027] The ergonomics of a self-loading firearm can also be optimized with the interchangeable backstrap. Various versions of the interchangeable backstrap with different dimensions, dimensions, backstrap thickness, etc., can be used to vary, for example, the distance from the trigger to the back of the backstrap and / or the distance between the front of the grip and the back of the backstrap. By appropriately dimensioning the interchangeable backstrap, it can be easily adapted to a shooter's different hand sizes.

[0028] The invention advantageously allows the grip of a firearm, especially a self-loading pistol, to be easily, comfortably, and simply adjusted to the shooter's hand size and shape, thus improving ergonomics. This also applies to service weapons, which are normally largely produced in a uniform series.

[0029] For example, a shooter with small hands may use a firearm without grip panels and with a slim interchangeable backstrap, or with thin grip panels and a slim interchangeable backstrap. A shooter with large hands, on the other hand, may prefer thick grip panels and a thicker backstrap.

[0030] These measures make it possible to improve recoil control and thus increase the precision of firing due to the improved handling of the firearm.

[0031] The interchangeable grip back can be made inexpensively from plastic. The material can also be chosen to be flexible within certain limits, thus compensating for small tolerances.

[0032] A set or assortment can contain at least one firearm and at least one interchangeable grip back, or at least two interchangeable grip backs and / or side panels that differ in size and / or material and / or surface finish but are otherwise identical. The set can be provided with the firearm or without, i.e., as a retrofit kit. A set can also consist of a firearm and an interchangeable grip back.

[0033] By providing a set or assortment of at least one firearm and at least one interchangeable grip back or a set of at least two interchangeable grip backs with or without grip panels, the optimal range of use of the weapon can be increased.

[0034] This allows a shooter to optimally adjust the firearm to his ergonomic needs and individual hand size.

[0035] Preferably, the coupling interface of the interchangeable grip back is designed as a locking element and / or securing element. In a simple embodiment, the coupling interface is provided as a block or locking block that protrudes from the inside of the interchangeable grip back and can be inserted into a complementary recess in the grip or its frame. This measure allows the interchangeable grip back to be supported in the grip or its frame. The surrounding recess can support the locking block and thus stabilize it.

[0036] The coupling interface itself can also act as a securing element by securing the interchangeable grip back to the firearm, in particular to its frame or grip, for example by means of force and / or form fit.

[0037] Alternatively or additionally, an additional securing element can be formed on the coupling interface, for example in the form of a locking, snap-in or similar connection, which engages with the frame or handle and fixes the coupling interface there.

[0038] Alternatively or additionally, an additional securing and / or fastening element, e.g., a pin, a locking roller, a latch, a bolt, or the like, which, for example, penetrates the interchangeable grip back entirely or partially, particularly transversely to the firing direction, can also be provided. The securing element can then, for example, fix the at least one or more weapon components in a locked position and thus secure them. The securing element can also be transferable into a release position in order to release the at least one weapon component, e.g., by removing the securing element or by transferring it into a release position, e.g., by rotating the locking roller.

[0039] Particularly preferably, in the case of the interchangeable grip back, the coupling interface is designed as a stop and / or guide for the at least one movable weapon component.

[0040] Since at least one movable weapon component is accommodated in the coupling interface, a stop serves to limit its path of movement, particularly if the at least one movable weapon component is a component of the trigger and / or firing mechanism. The coupling interface can also be provided solely as a guide or as an additional guide for the at least one movable weapon component, e.g., by providing the guide via a contact surface in the back of the interchangeable grip and, for example, by guiding and / or limiting the path of movement of the movable weapon component there. For example, when the trigger mechanism is actuated, at least one weapon component, such as a breaker bar, trigger bar, etc., can be guided there and slide on or in the coupling interface.

[0041] In a structurally simple embodiment, the stop and / or guide can be provided as a recess and / or elevation in the interchangeable grip. The geometric design of the stop and / or guide can also be fully or partially adapted to the external geometry of the at least one movable weapon component. This measure can improve the guidance of the at least one movable weapon component and / or ensure a stop.

[0042] Due to the compact size and the short distance between the barrel axis and the hand rest, the stops (or end stops) of the trigger bar and / or the interrupter or interrupter bar, for example, can be integrated into the upper section of the interchangeable grip back.

[0043] This ensures an even more compact design of the firearm.

[0044] The inner region of the coupling interface, which may be designed as a locking block, for example, can also serve as a stop for the firing mechanism, for example by accommodating the trigger pawl and / or sear pawl.

[0045] The stop serves, among other things, to stabilize and / or guide at least one movable weapon component. For example, the interrupter latch and / or trigger bar can be guided in their movement on the inside of the interchangeable grip backplate during firing. Likewise, the inside of the interchangeable grip backplate can serve as a stop for the path of movement of the interrupter latch and / or trigger bar. For this purpose, in a simple embodiment, a recess and / or elevation can be provided on the inside of the interchangeable grip backplate, on or in which, for example, the interrupter latch and / or trigger bar are guided or can be brought into stop. The same applies alternatively or additionally to the release latch and / or sear latch. In particular, the release latch and / or sear latch can be at least partially recessed into the interchangeable grip backplate in an elevation and / or depression.In a simple embodiment, a locking block can be provided which can be at least partially opened and which can accommodate a release and / or catch pawl in its interior.

[0046] This measure allows the installation space within the self-loading firearm to be reduced and the rear section of the grip to be made more compact.

[0047] Preferably, the coupling interface of the interchangeable grip back is used to attach and / or secure the interchangeable grip back to the firearm.

[0048] Preferably, the interchangeable handle back comprises a handle back extension, which is designed in particular as a well-known beaver tail.

[0049] By enlarging the contact surface in the rear area of ​​the backstrap and thus the contact surface of a shooter's hand, the tipping of a firearm, especially a self-loading pistol, is reduced, especially when firing.

[0050] By combining the sizes of the interchangeable back grip and the additional integration of the grip extension as a beaver tail, an even better adaptation to a wide variety of hand sizes and thus improved control of the firearm when shooting is possible.

[0051] Preferably, the interchangeable grip back can be secured to the firearm via at least one further safety element.

[0052] In a simple embodiment, the securing element is provided as a roll pin, pin, or bolt. The securing element can, for example, penetrate the interchangeable grip backplate completely or partially, particularly transversely to the firing direction, and fasten or secure it to the grip of the weapon. The interchangeable grip backplate preferably comprises at least one second coupling interface as a receiving interface for mounting and dismounting the interchangeable grip backplate on the firearm.

[0053] This coupling interface can be provided for securing the interchangeable grip backrest. For this purpose, the interchangeable grip backrest can be slid under a rib or rail guide of the grip piece with a side edge, preferably also with the top and / or bottom edge, or with a rail. A rail can be provided on the edge of the interchangeable grip backrest or at a suitable internal position spaced from the edge.

[0054] Preferably, the interchangeable handle back comprises the second coupling interface as at least one receiving interface, in particular as a profiling, on / in the inner geometry of the interchangeable handle back.

[0055] The second coupling interface also serves to attach and mount the interchangeable grip backstrap to the firearm's grip. Suitable coupling geometries are provided for this purpose, which engage with counter-geometries on the grip, thus enabling a connection.

[0056] For this purpose, appropriate external geometries on the interchangeable handle back can be provided that complement the corresponding counter geometries on the handle and engage with them, e.g. hammer head profile, dovetail profile, rail guide or the like.

[0057] Additionally or alternatively, the interchangeable handle back can be coupled to the handle via a tongue and groove connection and / or via positive and / or force fit.

[0058] The interchangeable handle back can also be attached, or additionally, using a snap-in connection, for example. However, snap-in connections have the disadvantage of potentially hindering or preventing the removal of the interchangeable handle back. Therefore, the interchangeable handle back is preferably attached using a transverse pin, in particular a roll pin, a coiled roll pin, a bolt, or the like. The transverse pin can preferably be attached with a press fit, but an annular groove for engaging a spring element can also be provided.

[0059] The interchangeable grip back can also include suitable structures and / or elements to increase its strength and / or rigidity, e.g. ribs, inserts, fiber reinforcements, fiberglass mats, etc. Bars in the interchangeable grip back can reinforce the interchangeable grip.

[0060] Preferably, the interchangeable handle back comprises an anti-slip surface in or on its outer geometry.

[0061] For example, the surface can be provided with knobs, grooves, ridges, etc., which make it easier and safer to grip when wearing gloves.

[0062] In particular, the surface structure and / or geometry of the interchangeable grip back promotes a reliable hold of the firearm in the hand.

[0063] The interchangeable handle back can be ergonomically designed in its external geometry or equipped with ergonomic elements.

[0064] The interchangeable handle back can be designed in different suitable dimensions.

[0065] The firearm may comprise at least one coupling interface complementary to the interchangeable grip back.

[0066] In a simple embodiment, a recess is provided in the frame, the dimensions and dimensions of which correspond to the dimensions and dimensions of the coupling interface of the interchangeable handle back.

[0067] For assembly, the two coupling interfaces can then be easily coupled by inserting or inserting the coupling interface of the interchangeable grip backplate into the complementary coupling interface, such as the recess in the firearm, for example, the frame. Conversely, the recess can also be provided in the interchangeable grip backplate, into which a raised portion on the grip can be inserted.

[0068] The interchangeable grip back can also extend completely or partially over the sides of the grip. For this purpose, the interchangeable grip back can also include at least one side shell. This can be formed integrally / in one piece with the interchangeable grip back.

[0069] Alternatively, the at least one side shell can be provided as a separate component that can be attached to the grip of a firearm in a known manner.

[0070] The interchangeable handle back preferably comprises at least one separate interchangeable side shell. In the case of one or two separate interchangeable side shells, the interchangeable handle back can also be provided for securing and / or fastening the interchangeable side shell(s), for example, by sliding the interchangeable handle back completely or partially over the interchangeable side shell(s) and / or coupling it to them, for example, via a suitable connection or a holding or securing element, such as a clamping pin penetrating both components, a coiled clamping pin, a bolt, etc.

[0071] Particularly if the interchangeable side panels do not perform a load-bearing function, they can also be designed with a soft surface, provided their grip on the handle is guaranteed. If the interchangeable side panels require it, they can also include a hard base onto which a soft contact surface is molded.

[0072] Ergonomics can be further improved with interchangeable side panels. This allows the thickness of the plastic grip, viewed in the direction of fire, as well as the thickness of the grip across the direction of fire to be adjusted or adjusted.

[0073] Additionally, features can be added to the grip sides / side panels, such as a thumb rest for right- or left-handed shooters, or ridges to prevent a small hand from slipping, and much more. In particular, this feature allows the curvature of a finger resting against the side panel to always remain consistent, regardless of the shooter's hand size.

[0074] Character description

[0075] Embodiments of the invention are explained in more detail below with reference to the accompanying schematic drawings. In the drawings:

[0076] Fig. 1 is a perspective view of a self-loading pistol with a first embodiment of an interchangeable grip back according to the invention mounted thereon, in a view obliquely from the rear left;

[0077] Fig. 2 is a perspective view of a self-loading pistol with a second embodiment of an interchangeable grip back according to the invention mounted thereon, in a view obliquely from the rear left;

[0078] Fig. 3 is a perspective view of the self-loading pistol from Fig. 1 or 2 without interchangeable grip back in a view obliquely from the rear right;

[0079] Fig. 4a and 4b perspective views of the interchangeable handle back from Fig. 1 in a view from the front right;

[0080] Fig. 5 is a perspective view of the self-loading pistol from Fig. 1 with the interchangeable grip backs according to the invention removed, viewed diagonally from the rear left;

[0081] Fig. 6 is a perspective view of the grip of the self-loading pistol from Figs. 1 and 5 with the interchangeable grip back according to the invention mounted and the magazine removed, viewed diagonally from the rear right; Fig. 7 is a perspective view of a frame of the grip of the self-loading pistol from Figs. 1 and 6, viewed diagonally from the rear right;

[0082] Fig. 8 is a perspective view of the frame of the handle from Fig. 7 in a view obliquely from the bottom right of Fig. 7;

[0083] Fig. 9 is a longitudinal sectional view through the grip of Fig. 6 with the interchangeable grip back according to the invention mounted and the magazine removed;

[0084] Fig. 10 is an enlarged detailed view of the longitudinal section through the handle of Fig. 6, with the pawls in their rest position;

[0085] Fig. 11a and 11b perspective views of the detailed view from Fig. 10 in views from the rear left and right;

[0086] Fig. 12 is an enlarged detailed view of the longitudinal section through the handle from Fig. 6, with the pawls in their end stop in the interchangeable handle back;

[0087] Fig. 13 a and 13b perspective views of the detail view from Fig. 12 in views from the rear left and right;

[0088] Fig. 14a and 14b perspective views of Fig. 13a and 13b, supplemented by the trigger bar and interrupter pawl in their rest position;

[0089] Fig. 15 is a perspective detail view showing the trigger bar and breaker latch in their final position in the interchangeable grip back, from the front left; and

[0090] Fig. 16 is a detailed sectional view of the trigger bar and breaker latch from Fig. 15 in their final position in the interchangeable grip back. The structure and function of the interchangeable grip back according to the invention are first explained with reference to Figs. 1 to 6.

[0091] The applicant's SFP9 CC is shown as an example of the self-loading firearm 1. Further elements of the SFP9 and their functional principles are known from the publications DE 10 2013 008 091 (loading aid), DE 10 2013 022 082 (drop safety), DE 10 2013 010 969 (disassembly safety device), and DE 10 2013 022 080 (device for preventing the cocking of a firing pin spring during disassembly of a hammerless self-loading pistol equipped with a bolt slide) and are not described separately.

[0092] The functional sequence for shooting and automatic reloading in a self-loading firearm can be simplified as follows:

[0093] The weapon features a longitudinally movable bolt assembly for firing a shot, extracting a spent cartridge case, and reloading it. In the figures, the bolt assembly is shown as a slide on the top of the grip. For firing, the bolt assembly feeds a cartridge from the magazine in a known manner into a cartridge chamber in the barrel. When a trigger mechanism is pulled, a firing pin strikes the cartridge base and ignites a propellant charge, firing a projectile from the cartridge case through the barrel.

[0094] Firing the shot causes the bolt assembly to move backward in the usual way. An extractor grips a cartridge case by its edge at the base of the case and pulls it out of the chamber as the bolt assembly moves backward. An ejector then expels the cartridge case from the weapon through a cartridge ejection port in the usual way. As the bolt assembly moves backward, it slides backward over the magazine.

[0095] To feed a cartridge, the top of the magazine rear wall and the magazine front wall are recessed downwards over a certain distance. The side walls of a magazine are extended upwards, forming so-called magazine lips, which prevent the cartridge from falling out of the magazine. A spring located in the magazine urges a cartridge follower upward within the magazine housing, thus pushing the cartridges upward. There, the bolt assembly can then guide them out of the magazine and into the cartridge chamber.

[0096] When the bolt assembly subsequently advances, it pushes the top cartridge out of the magazine and feeds it into the cartridge chamber, and the cycle repeats itself when another shot is fired in single-fire mode after the trigger is pulled again, or automatically in continuous fire mode.

[0097] After firing the last cartridge, the magazine can be removed from the weapon using a familiar magazine release device or dropped out of it and a new magazine can be inserted.

[0098] Figure 1 shows a perspective view of a self-loading pistol 1. The self-loading pistol 1 comprises a grip 3 and a slide 5 surrounding a barrel (not shown). The grip 3 comprises, on its rear side, an interchangeable grip back 7 according to the invention, which extends rearward on its upper side via a so-called "beavertail" 9. On its front underside, the interchangeable grip back 7 is secured to the grip 3 by a tension pin 10, in particular a spiral tension pin, inserted transversely to the firing direction.

[0099] On the front underside of the grip 3, a trigger or trigger blade 13 is arranged within a trigger guard 11. By engaging a trigger safety 14, a trigger mechanism (not shown) can be actuated in a known manner via the trigger 13, and one or more shots can be fired as described above. The underside of the grip 3 shows the underside or base of a magazine 15 inserted therein. The magazine 15 can be secured in the grip 3 via a magazine catch 16, or can be released from the grip 3 via the magazine catch in a known manner to remove the magazine. The structure and function of other weapon elements, such as the slide stop lever 17, disassembly lever 19, cartridge ejector 21, rear sight 23 and sight comb 25, loading aid 27, etc., are known per se, are described in the previously mentioned publications or at the outset, and will therefore not be explained further.

[0100] Fig. 2 shows a further embodiment of the interchangeable handle back 7 according to the invention, which differs from the embodiment according to Fig. 1 in that the interchangeable handle back 7 does not have a “beavertail” on its upper side, i.e., it is shorter on its upper side compared to the embodiment according to Fig. 1.

[0101] Fig. 3 shows the grip 3 from Fig. 1 and 2 without the interchangeable back grip and without the bolt slide mounted thereon, in a perspective view from the rear right. On the lower rear side, a projection or nose 30 extends rearward approximately in the middle of the rear of the grip, slightly inclined to the bore axis. In the projection 30, a through-bore 29 extends approximately transversely to the bore axis, which is provided for receiving the roll pin 10 (cf. Fig. 1, 2, 5 and 6). Above the projection 30, two pairs of rail guides or rail receptacles 31 a, b extend over the rear of the back grip 3 in the direction of the upper end of the grip 3. The lower rail guides or rail receptacles 31 a, b and the two upper rail guides or rail receptacles 31 a, b are interrupted by two recesses 33 a, b.

[0102] Between the rail guides or rail receptacles 31 a, b, a recess 37 extends over the rear of the handle 3 in its longitudinal direction. Above the recess 37, a further through-bore 35 extends transversely to the core axis, which is provided for receiving a further clamping pin for mounting and fastening the interchangeable handle back 7.

[0103] Extending from the top of the grip 3 is a frame 39 surrounding the upper portion of the grip. The slide stop lever 17 is provided on the right side of the frame 39, as well as a disassembly roller 20 extending transversely to the bore axis for disassembling the pistol 1 in a known manner. Within the frame 39, extending approximately parallel to the bore axis, are a sear 55, a release pawl 57, a trigger bar 59, and a breaker bar 61.

[0104] The sear blade 55 is designed to catch and hold the firing pin (not shown) as the bolt slide 5 of the hammerless self-loading pistol advances, with the further forward movement of the bolt slide 5 cocking the firing pin spring (not shown). If the user unlocks the sear by pulling the trigger to remove the slide, a shot will be unintentionally fired during disassembly.

[0105] The trigger pawl 57 has the task of releasing the firing pin when the trigger mechanism is actuated.

[0106] The trigger rod 59 is coupled to the trigger 13 and has the task of transmitting the force when the trigger 13 is actuated to the release pawl 57.

[0107] During its movement backwards, the locking slide 7 acts on the interrupter rod 61 and pivots it downwards and, as the name suggests, serves as an interrupter element during semi-automatic closing.

[0108] The interaction of these elements is known per se and is described in detail, for example, in the aforementioned DE 10 2013 022 080.

[0109] Fig. 4a and 4b show two perspective views of the interchangeable grip backrest 7 from Fig. 2, viewed diagonally from the front. Fig. 5 shows the interchangeable grip backrest 7 mounted on the self-loading pistol. The dimensions and dimensions of the back of the interchangeable grip backrest 7 can be configured differently, allowing the shooter to select the optimal thickness of the interchangeable grip backrest depending on their hand size.

[0110] On its inner side, which faces the grip 3 during assembly (cf. Fig. 5), the lower end of the interchangeable grip back comprises mounting blocks 46a, b on both sides, each of which is penetrated by a receiving bore 44. In Fig. 4a and b, only the receiving bore 44 in the mounting block 46b is shown, which then continues into the mounting block 46b. The receiving bores 44 extend transversely to the firing direction and serve to receive the roll pin 10 (cf. Fig. 1 and 2) for securing and fastening the interchangeable grip back 7 during assembly. The receiving blocks 46a and b taper upwards above them and thus form a recess extending between them. Adjacent to them on both sides are opposite lower rails 43a and b. Adjacent to the lower rails 43a and b is a recess 42 which is approximately the same length as the lower rails 43a and b.Adjacent to the recess 42, opposing upper rails 41a and b are provided on both sides. Adjacent to these, in turn, is a recess 40 that extends upward toward the upper rear end of the interchangeable handle back 7.

[0111] The upper rear end of the interchangeable grip back 7 extends rearward at approximately a 90-degree angle and is dimensioned to complement the underside of the grip piece 3. A locking block 45 is provided on the upper side of the upper rear end of the interchangeable grip back 7. This locking block extends upwards in an approximately rectangular shape and is partially open on one side on its right-hand side. The locking block 45 comprises a cavity 48 within it, the inner rear and side walls of which form on its inner sides a stop 47 for the sear 55, next to it a stop 49 for the release pawl 57, another stop 51 for the trigger bar 59 and another stop 53 for the interrupter bar 61. The stops 51 and 53 are provided as recesses next to the locking block 54.

[0112] To assemble the interchangeable grip backrest 7, it is placed onto the grip piece 3 from behind (see Fig. 5). To do this, the shooter positions the interchangeable grip backrest 7 such that the upper rails 41a, b are opposite the recess 33a and b and the lower rails 43a and b are opposite the projection 39. The lower rails 43a and b can then be pushed under the lower rail guides 31a and b, and the upper rails 41a and b can likewise be pushed under the upper rail guides 31a and b, so that the lower rails engage behind the lower rail guides 31a and b and the upper rails 41a and b engage behind the upper rail guides 31a and b. The interchangeable grip backrest 7 can be pushed onto the back of the grip piece 3 until it comes to a stop at the upper rear end of the grip piece 3. The locking block 45 is provided with a recess 67 which is complementary in its internal dimensions (see Fig.8 and 9) until it is completely received therein and the inside of the interchangeable handle back 7 lies completely against the frame and handle 3 (cf. Fig. 6, 8 and 9).

[0113] Fig. 6 shows the interchangeable grip back 7 mounted on the grip 3 without the bolt slide 5, viewed diagonally from the rear top right. The elements previously described in Fig. 3 are located within the frame. The lower clamping pin 10 is shown, and the clamping pin inserted into the upper bore 35 (see Fig. 3) is concealed by the outer side sections of the interchangeable grip 7.

[0114] Figs. 7 and 8 show two perspective views of the frame 39 of the grip 3 of the self-loading pistol 1 from Figs. 1 and 2, one obliquely from the rear right (Fig. 7) and the other obliquely from the bottom right (Fig. 8). The trigger bar is coupled to the trigger 13 at its front lower end via a trigger bar spindle 60. If the shooter pulls the trigger 13 rearward after releasing it by applying the trigger safety 14, the trigger bar 59 moves rearward and upward.

[0115] Fig. 8 also shows the magazine well 65, into which the magazine 15 can be inserted from below. The through-hole 35 for fastening and mounting the interchangeable grip back 7 at its upper, inner end area is provided in a projection 36 extending rearward on the magazine well 65. A coil spring 63 is supported on the upper side of the projection 35, which urges the sear 55 upward, i.e., into its catching position for catching and holding the firing pin (not shown).

[0116] Fig. 9 shows a longitudinal sectional view of the grip 3 from Fig. 6 with the interchangeable grip back 7 according to the invention mounted, without a magazine and without a bolt slide. This shows how the interchangeable grip back 7 is supported on the frame 39. The frame 39 thus serves to stabilize it. Fig. 10 shows an enlarged detailed view of the longitudinal sectional view through the grip from Fig. 6, with the sear 55 and the release pawl 67 in their rest position. In the rest position, the sear 55 projects upwards beyond the frame 39 with its rear end. Extending upwards is a catch lug 75, which serves to catch and hold the firing pin (not shown) so that the firing pin spring (not shown) is tensioned when the bolt slide 3 advances.

[0117] As is known, the following elements are provided for firing the shot: the trigger 13, the trigger safety 14, the trigger bar 59 coupled to the trigger 13, the release latch 57, the sear 55, the firing pin and the bolt slide 5. The structure of these components and their interaction is described below with reference to Figures 7 and 9 to 16.

[0118] The trigger 13 is pivotally mounted about its trigger shaft and is pre-tensioned by a spring (not shown) into its rest position shown, for example, in Figure 7.

[0119] The trigger bar 59 is coupled at its front end to the trigger 13 via a pin acting as the trigger bar axis 60 and extending transversely to the firing direction through the trigger 5. The trigger bar 59 is supported in the grip 3 by a spring-loaded spring to enable vertical and translational movement of the trigger bar 59. At the rear end of the trigger bar 59 is a lower lug 81 formed toward the right, and at its upper end is an upper lug 83 formed toward the left.

[0120] The release latch 57 is provided on the left side, at the rear end of the trigger bar 59 and is pivotally mounted about an axis 73 which extends transversely to the firing direction and is inserted into the grip 3. The assembly of the axis 73 in additional wall elements of the grip 3 is known and not shown. The release latch 57 is bent to the left at its rear, lower end in the shape of a tab or nose for engagement with the sear 55 and comprises a nose 85 at its rear, upper end which projects in the firing direction towards the upper tab 83 of the trigger bar 59. The sear 55 is pivotally mounted in the grip 3 about an axis 71 in the rear end region of the trigger bar 59, parallel to the latter, to the left of the upper nose 85 of the release latch 57 below the firing pin (not shown). At the rear end of the catch 55, a catch nose 75 protrudes backwards.Below the catch lug 75, an approximately rectangular recess or cutout 79 is provided, which is bounded at the bottom by a hook-like end of the sear 55. The trigger pawl 57 engages with its tab-shaped trigger pawl nose 77 in the recess 79. Furthermore, a compression spring acting as a return spring 63 (cf. Figs. 8 to 14) is provided approximately centrally on the underside of the sear 19, which supports the sear 55 downwards in the grip 32. At the front end of the sear 55, it is pivotally mounted about an axis 71 extending transversely to the bore axis of the pistol 1.

[0121] As described at the beginning, the sear 55, in its rest position, projects with its catch nose 75 into the path of movement of the firing pin and catches it when the pistol 1 is loaded, so that the pistol is cocked by the further advancing bolt slide.

[0122] When firing, the shooter pulls the trigger 13 backward against the spring force of the trigger spring 12 (see Fig. 9). The trigger 13 pulls the trigger bar 59, which is coupled via the trigger bar axis 60, backward. The front end of the trigger bar 59 moves upward and backward in a circular path around the trigger bar axis 60.

[0123] In Figs. 15 and 16, the rear end of the trigger bar 59 is displaced backward and downward in the longitudinal direction compared to Figs. 14 a and b. The lower tab 81 of the trigger bar 59 extends out of a recess 24 in a breaker bar 21, thus moving the rear end of the trigger bar 59 downward. In this position, the end of the trigger bar 59 is in engagement with the stop 51 next to the locking block 45. The same applies to the end of the breaker bar 61, which is in engagement with the stop 53 next to the locking block 45.

[0124] The stops 51 and 53 are provided as recesses next to the locking block, in which the respective ends of the trigger rod 59 and the interrupter rod 61 are guided back and forth during the movement of the trigger mechanism and thus perform a dual function - guide and stop.

[0125] The upper tab 83 of the trigger rod 59 has applied its rear end face to the nose 85 of the release pawl 57, causing it to pivot backwards and downwards on a circular path around its bearing axis 73. Through its operative engagement, the release pawl 57 has pivoted the release pawl 55 backwards and downwards around the bearing axis 71 against the spring force of the return spring 63. In this position, the release pawl 57 is in its end stop and rests against the stop 49 on the inner wall of the locking block 45. Likewise, the sear pawl 55 is in its end stop in this position and rests against the stop 47 on the inner wall of the locking block 45.

[0126] The 75-mm catching lug has released the firing pin, allowing it to move freely forward for firing. At the end of its travel, the firing pin strikes the cartridge base (not shown) of a cartridge (not shown) located in the chamber and ignites a propellant charge in the usual manner.

[0127] Further embodiments of the invention will become apparent to the person skilled in the art from the dependent claims and the following drawings.

Claims

Claims 1. Interchangeable grip back (7) for mounting and dismounting on a firearm (1), characterized in that the interchangeable grip back (7) comprises at least one coupling interface (45) for receiving and / or mounting at least one movable weapon component (55, 57, 59, 61), in particular the trigger mechanism.

2. Interchangeable handle back (7) according to claim 1, wherein the coupling interface (45) is designed as a locking element () and / or securing element ().

3. Interchangeable grip back (7) according to claim 1 or 2, wherein the coupling interface (3) is designed as a stop (47, 49, 51, 53) and / or guide (47, 49, 51, 53) for the at least one movable weapon component (55, 57, 59, 61).

4. Interchangeable grip back (7) according to one of the preceding claims, wherein the coupling interface (45) serves to fasten the interchangeable grip back (1) to the firearm (1).

5. Interchangeable handle back (7) according to one of the preceding claims, wherein the interchangeable handle back (7) comprises a handle back extension which is designed in particular as a beaver tail (9).

6. Interchangeable grip back (7) according to one of the preceding claims, wherein the interchangeable grip back (7) can be secured to the firearm (1) via at least one additional securing element (10).

7. Interchangeable grip back (7) according to one of the preceding claims, wherein the interchangeable grip back (7) comprises at least one second coupling interface for mounting and dismounting the interchangeable grip back (7) on the firearm (1).

8. Interchangeable handle back (7) according to claim 7, wherein the second coupling interface comprises at least one receiving interface, in particular a profiling, on / in the internal geometry of the interchangeable handle back (7).

9. Interchangeable handle back (7) according to one of the preceding claims, wherein the interchangeable handle back (7) has an anti-slip surface in or on its outer geometry.

10. Interchangeable handle back (7) according to one of the preceding claims, wherein the outer geometry of the interchangeable handle back (7) is ergonomically designed and / or provided with ergonomic elements.

11. Interchangeable handle back (7) according to one of the preceding claims, wherein the interchangeable handle back (7) can be formed in different suitable dimensions.

12. Interchangeable handle back (7) according to one of the preceding claims, wherein the interchangeable handle back (7) additionally comprises at least one side shell.

13. Firearm (1) with at least one interchangeable grip back (7) according to one of the preceding claims.

14. Firearm (1) according to claim 13, which comprises at least one coupling interface (67) complementary to the interchangeable handle back (7).

15. Set comprising at least one firearm (1) according to claim 13 or 14 and at least one interchangeable grip back (7) according to one of claims 1 to 12 or at least two interchangeable grip backs (7) according to one of claims 1 to 12.

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