Trigger with incrementally adjustable trigger weight for ar-type weapons

Abstract

A trigger with a stepwise adjustable trigger weight is described for weapons of the AR (3) type, which trigger is characterized in that the trigger blade (15) has at least one opening, wherein the at least one opening has a step (30), and wherein the step (30) has at least two shoulders (32) and (33) of different depths, and wherein a switching shaft (18), which has a first cylindrical section (34), at least one extension (35) and a second cylindrical section (36), is guided in the opening in a rotatable and axially displaceable manner, and wherein the switching shaft (18) is pressed with its at least one contact shoulder (37) against the step (30) or into one of the at least two shoulders (32) and (33) of different depths by the force of a trigger spring (21), which is supported on a bottom surface (23) in the trigger housing (14) or on the bottom of the housing lower part (5) of the weapon.

Description

[0001] Self-loading rifles, such as assault rifles for military use, are frequently equipped with accessories like telescopic sights, red dot sights, lights, lasers, bipods, etc. For easy and repeatable mounting of these accessories, these weapons are typically equipped with prism rails on the top of their receiver, manufactured according to MIL-STD-1913 or standards based on MIL-STD-1913. These prism rails are known as "Picatinny rails" and consist of a profile running in the direction of fire, which is provided with transverse slots at regular intervals. The mounting systems for attaching accessories are equipped on their side facing the Picatinny rail with at least one recoil lug that engages in one of the transverse slots.The handguard and other parts of the weapon can also be equipped with Picatinny rails, whereby the Picatinny rails can be either an integral part of a component of the weapon or designed as separate parts that can be connected to the corresponding weapon component, for example by a screw connection.

[0002] A clamping system for accessories on Picatinny rails is disclosed, for example, in EP 2 339 287 A2. This mounting system uses either a nut system or a lever system for clamping onto the Picatinny rail. The lever system is dimensioned such that the relatively long lever allows for a very high clamping force, and its curved shape makes it easy to operate even with gloves. When rifle scopes are attached using such clamping systems, the adjustment turrets for parallax correction, illumination, and windage, located on the left and right sides of the scope, protrude further laterally than the nut or lever system. Therefore, the clamping system does not interfere with the use of the weapon. This mounting system is also very well suited for clamping night vision or thermal imaging attachments.These very wide and heavy auxiliary devices also protrude significantly beyond the clamping system in most cases. A further advantage of the lever system, even compared to the nut system disclosed in the same application, is its tool-free operation and the consistently constant clamping torque.

[0003] The aforementioned applications frequently utilize AR-10 and AR-15 rifles. Their development in the 1950s is attributed to Eugene Stoner for the Armalite company. The abbreviation AR originally stood for "Armalite Rifle." These rifles are self-loading, with civilian versions operating as semi-automatic rifles and military versions sometimes operating as fully automatic. With a semi-automatic weapon, the trigger must be pulled for each shot. In contrast, the fully automatic version allows for continuous fire.

[0004] Today, many manufacturers of this type of firearm no longer refer to their weapons as AR-10 or AR-15, but instead market their models under their own designations. However, nearly all AR-10 and AR-15 handguns share the common feature of a trigger mechanism mounted to the receiver by means of two cylindrical pins. A distinction is made between triggers with and without a separate trigger housing. In triggers without a separate trigger housing, the hammer and trigger blade are mounted directly to the receiver by means of the cylindrical pins. The receivers of this type also share the feature that the upper and lower receiver halves are connected by two additional pins. When the rear of these two pins is fully extended, the upper receiver halves can be hinged open via the front pin, thus providing access to the trigger from above. These design features have been retained since the 1950s.

[0005] For the sake of simplicity, the term "AR-type weapons" will be used instead of "AR-10 or AR-15 type weapons" in the following text.

[0006] The terms "left", "right", "top", and "bottom" refer to the shooter's line of sight with the weapon shouldered. This line of sight runs along the barrel towards the muzzle.

[0007] The terms "cocked trigger" and "cocked hammer" are used in the following text to describe the same state: If the hammer is cocked, then the entire trigger mechanism is also cocked, and vice versa. The same applies to the terms "released trigger" and "released hammer."

[0008] Various triggers are available for AR-type rifles, allowing for adjustment of the trigger pull weight. A distinction is made between continuously adjustable and incrementally adjustable trigger pull weights.

[0009] A stepless trigger pull adjustment is usually achieved by turning an adjustment screw on the trigger mechanism. This screw acts on a trigger spring, which is compressed more or less. This results in a lighter or heavier trigger pull. The disadvantage of a stepless adjustment is that the exact trigger pull weight is not visible or discernible. To determine or measure the trigger pull weight, trigger scales are used. These scales are available with mechanical or electronic displays. To determine the trigger pull weight, the firearm must be securely clamped and the barrel horizontally aligned. The measuring rod of the trigger scale must then be placed against the trigger blade, and the trigger pulled. The trigger pull weight can then be read on the display unit of the trigger scale.

[0010] If a minimum trigger pull weight of, for example, 1000 g is stipulated by a sporting regulation, another way to test it is to fix the weapon with the barrel pointing vertically upwards, carefully hang a 1000 g weight on the trigger, and wait to see if the trigger pulls. If the trigger pulls, the trigger pull weight is below 1000 g. If it doesn't pull, the trigger pull weight is higher than 1000 g. However, this method does not allow for a precise determination of the actual trigger pull weight.

[0011] The ability to adjust the trigger pull weight in steps by turning an adjustment screw equipped with a click or detent function has the same disadvantage as a stepless adjustment, namely that the size of the set trigger pull weight is not known or cannot be read.

[0012] Another way to adjust the trigger pull weight in increments is by replacing the trigger spring(s). Differently designed springs, for example with smaller or larger wire diameters, result in different spring forces and therefore different trigger pull weights. To make it easier to distinguish between them, manufacturers color-code the springs, with each color corresponding to a specific trigger pull weight. A disadvantage is that replacing the springs is relatively time-consuming, and not every user has the skills and knowledge to perform the replacement themselves. With many designs available on the market, the trigger assembly must be removed from the gun receiver to replace the springs. Furthermore, the springs or their retaining screws can be lost during the replacement process.

[0013] In many cases, the user is overwhelmed by the task of adjusting the trigger pull weight. This can lead to dangerous situations, such as an unintentional discharge due to a trigger pull weight that is set far too low. So-called "doubling" can also occur, referring to the firing of multiple shots from a semi-automatic weapon with a single trigger pull.

[0014] There is therefore a need for a trigger for AR-type firearms whose trigger pull weight can be easily adjusted by the user, and whose set trigger pull weight is clearly verifiable and readable without requiring additional measuring devices such as a trigger scale or other aids such as weights. It should not need to be removed from the firearm receiver for adjustment. Furthermore, no loose parts should be lost during the adjustment process.

[0015] No trigger mechanism for AR-type weapons that meets the aforementioned criteria is known in the current state of the art.

[0016] US Patent 2023 / 0088105 A1 discloses a trigger for AR-type firearms equipped with an adjustment screw for incremental trigger pull weight adjustment. The trigger has at least one lateral recess on the adjustment screw, into which a spring engages, as its incremental setting. The set trigger pull weight cannot be read or determined without a measuring device or additional aid.

[0017] German patent DE 20 2015 101 485 U1 discloses a trigger mechanism with a side-mounted adjusting element, operable with a standard Allen wrench, for incrementally adjusting the trigger pull weight. This adjusting element features several circumferentially distributed surfaces for adjusting the trigger spring preload. If a trigger of this design were installed in AR-type firearms, the trigger mechanism would have to be removed from the receiver to access the adjusting element.

[0018] US patent 2012 / 0180356 A1 discloses a trigger mechanism for AR-type firearms in which the desired trigger pull weight is adjusted by replacing the springs. The manufacturer typically supplies the triggers with additional springs to allow for different trigger pull weights. While replacing the springs does not require removing the trigger from the receiver, this task demands manual dexterity and results in the loss of parts such as the springs themselves and the spring retainer.

[0019] German patent DE 20 2023 102 920 U1 discloses a trigger for AR-type firearms in which the desired trigger pull weight can be adjusted using two adjusting screws that pre-compress springs arranged in series to a greater or lesser degree. It is proposed that both adjusting screws be set equally. Additionally, it is proposed that the trigger pull force can be influenced by replacing the springs. The trigger does not need to be removed from the receiver to adjust the trigger pull weight, as the adjusting screws are accessible from above. Markings are proposed on the receiver, to be placed in the area of ​​the bores in which the adjusting screws and springs are installed. The user is often overwhelmed by the complexity of the adjustment process. Furthermore, parts are prone to being lost when replacing the springs.The suggested markings around the holes can help the user understand the amount of adjustment traveled. However, the set trigger pull weight cannot be read directly from the markings. A measuring device or other tool is required for this. It is also suggested that the trigger pull weight be determined by the screw-in depth of the adjustment screws. A table is provided that assigns possible screw-in depths to specific trigger pull weights. To determine the screw-in depth, however, a measuring device such as a caliper equipped with a depth gauge is needed.

[0020] The object of the invention is to create a trigger for AR-type firearms whose trigger pull weight can be easily adjusted by the user, and whose set trigger pull weight is clearly traceable and readable without the need for an additional measuring device such as a trigger scale or other aids such as a weight. The trigger should not need to be removed from the firearm receiver for adjustment. Furthermore, no loose parts should be lost during the adjustment process.

[0021] The problem is solved by a deduction having the features of claim 1. Advantageous embodiments and further developments of the invention are specified in the dependent claims.

[0022] In a trigger according to the invention, the trigger blade has at least one opening, wherein the opening has a step and wherein the step has at least two shoulders of different depths, and wherein a switching shaft, which has a first cylindrical section, at least one extension and a second cylindrical section, is rotatably and axially displaceably guided in the opening, and wherein the switching shaft is pressed with its at least one contact shoulder against the step or into one of the at least two shoulders of different depths by the force of a trigger spring, which is supported on a base surface in the trigger housing or on the base of the lower part of the weapon housing.

[0023] In a particularly preferred embodiment of the invention, the first cylindrical section of the switching shaft has a drive for an operating tool. This drive is preferably designed as a Torx® drive.

[0024] In a particularly preferred embodiment of the invention, the trigger is provided with markings indicating the set trigger weight.

[0025] The invention is explained below using the figures as an example.

[0026] They show: Fig. 1 An AR-type weapon with a built-in trigger, in a perspective view; Fig. 2 An AR-type weapon with the upper receiver folded down, without a built-in trigger, in a perspective view; Fig. 3 An AR-type weapon with the upper receiver folded down, with a built-in trigger, hammer in the released position, in a perspective view; Fig. 4 A trigger in the assembled state, hammer in the released position, in a perspective view; Fig. 5 The trigger in an exploded view, hammer in the released position, in a perspective view; Fig. 6 The trigger, hammer in the cocked position, trigger blade in the starting position, in a half-section, from the left; Fig. 7 The trigger, hammer in the cocked position, sears released, in a half-section, from the left; Fig. 8 The trigger, hammer in the released position, trigger blade in the fully depressed state, in a half-section, from the left.9. A trigger, in half-section, viewed from the left, Fig. 10. The trigger, viewed from direction A, Fig. 11a. A switching shaft, in perspective view, Fig. 11b. The switching shaft, in perspective view, Fig. 12. The trigger, the switching shaft in a first switching position and a trigger spring, in half-section, viewed from the left, Fig. 12b. The trigger, the switching shaft in a second switching position and the trigger spring, in half-section, viewed from the left, Fig. 12c. The trigger, the switching shaft during the switching process and the trigger spring, in half-section, viewed from the left, Fig. 13. The trigger, hammer in the broken position, in top view.

[0027] Subsequently, elements that are identical in design but are installed multiple times and in different locations are distinguished from one another using a letter index. For example, in the reference numeral list, the sub-assembly of the trigger shaft is designated with reference numeral 13, and in the explanatory text, a distinction is made between the front sub-assembly 13a and the rear sub-assembly 13b, as these are installed in different locations.

[0028] The same applies to elements that, due to the geometry of the component, are divided into sub-elements. For example, the reference numeral list names paragraph 32, and the explanatory text distinguishes between the two sub-paragraphs 32a and 32b, which arise because the small cylindrical section 31 penetrates paragraph 32.

[0029] Fig. 1Figure 3 shows an AR-3 type weapon. The upper receiver 2 and the lower receiver 5 are connected by means of the rear receiver pin 1 and the front receiver pin 4. A trigger 8 according to the invention is installed in the lower receiver 5, the trigger blade 15 of which protrudes downwards from the lower receiver 5.

[0030] In Fig. 2 An AR-3 type weapon without a built-in trigger (8) is shown. The rear receiver pin (1) is pulled out to its stop, and the upper receiver (2) is folded away from the lower receiver (5) as far as possible over the front receiver pin (4). The front transverse hole (6) and the rear transverse hole (7) in the lower receiver (5) are also visible.

[0031] Fig. 3Figure 3 shows an AR-3 type weapon with a built-in trigger 8. The hammer 9 is in the released position and protrudes almost vertically upwards from the lower receiver 5. The trigger 8 is connected by means of the two left pivot pins 10a, 10b and the two right pivot pins 11a, 11b in the front transverse bore 6 and rear transverse bore 7 (see Figure 1). Fig. 2 ) fixed. The two right-hand bearing journals 11a and 11b are located on the right-hand side and are therefore in Fig. 3 and also in the Figures 4 and 5 not apparent.

[0032] Fig. 4Figure 1 shows a trigger 8 according to the invention in its assembled state. The hammer 9 is in the cocked position. The trigger blade 15 of the trigger 8 protrudes downwards from the trigger housing 14. Also visible are the hammer spring 17, the switching shaft 18, and the breaker 16. The function of the breaker 16 is not explained in detail here, as it is irrelevant for the following explanations. The two left bearing journals 10a and 10b, as well as the two right bearing journals 11a and 11b, are laterally removed from the subassemblies of the trigger shafts 13 by means of a threaded drive (not explained in detail) (see also Fig. 5 ) extended. This position of the bearing pins 10a, 10b and 11a, 11b allows the trigger 8 to be fixed in the lower housing part 5 and is again described in the Fig. 13 depicted.

[0033] In Fig. 5The individual parts of the trigger assembly 8 are visible. The two sub-assemblies of the trigger shaft 13a and 13b are installed in the trigger housing 14. The hammer 9 is rotatably mounted on the front sub-assembly of the trigger shaft 13a, and the trigger blade 15 is mounted on the rear sub-assembly of the trigger shaft 13b. The hammer 9 has the detent surface 19, and the trigger blade 15 has the detent surface 20. The two left bearing pins 10a and 10b, as well as the two right bearing pins 11a and 11b, are recessed into the sub-assemblies of the trigger shafts 13 and therefore do not protrude laterally beyond the trigger housing 14. In this position of the bearing pins 10a, 10b and 11a, 11b, the trigger assembly 8 can be removed from and reinserted into the lower housing part 5. The hammer spring 17 is designed as a double-legged spring, which is supported with its legs on the hammer 9 and in the trigger housing 14 and whose coils are guided on the two laterally projecting extensions on the hammer 9.

[0034] The following will be discussed in the Figure 6 , 7 and 8 The process of triggering the detonator is explained in step 8.

[0035] Fig. 6 Figure 1 shows how, in the cocked state of the trigger 8, the force of the hammer spring 17 presses the sear surface 19 of the hammer 9 against the sear surface 20 of the trigger blade 15. The trigger spring 21 is designed as a compression spring and presses against the base surface 22 of the switching shaft 18 (see also Figure 2). Fig. 11b ) and against the base surface 23 in the extraction housing 14.

[0036] In another embodiment, not shown, the entire mechanism of the trigger 9 is not housed in a trigger housing 14, but is installed directly in the lower housing part 5. Thus, the trigger spring 21 does not act on a base surface 23 in the trigger housing 14, but directly on the base surface in the lower housing part 5.

[0037] The trigger blade 15 is in its starting position and its rear stop lug 25 rests against the rear stop surface 26 in the trigger housing 14. To release the trigger 8 and move the hammer 9 into the struck position, a pulling force must be exerted on the finger surface 24 on the trigger blade 15 with the finger, which is large enough to compress the trigger spring 21 sufficiently to release the two searing surfaces 19 and 20.

[0038] Fig. 7 Figure 8 shows the trigger in the cocked state and at the moment when the two searing surfaces 19 and 20 have just been released. At this point, the trigger spring 21 is compressed by the rotational movement of the trigger blade 15 around the rear sub-assembly of the trigger shaft 13b to such an extent that the set trigger weight or trigger force is applied.

[0039] The hammer spring 17 now accelerates the hammer 9 until it strikes the firing pin (not shown), which is located in the upper part of the housing 2.

[0040] Fig. 8 Figure 8 shows the trigger in the released position. Shortly after the two sear surfaces 19 and 20 are released, the trigger blade 15, with its front stop lug 27, reaches the front stop surface 28 in the trigger housing 14. The rotation of the trigger blade 15 around the rear sub-assembly of the trigger shaft 13b is stopped. In this position of the trigger blade 15, the trigger spring 21 has not yet reached its compressed length. Compressed length refers to the position of a compression spring in which all coils are pressed together and its minimum length is reached.

[0041] It becomes apparent that the desired trigger pull weight is directly dependent on the compression of the trigger spring 21 between the two surfaces 22 and 23. The set trigger pull weight or trigger force lies in the Fig. 7 shown condition.

[0042] Fig. 9 Figure 1 shows the tongue 15 in cross-section. A cutout is visible, the axis D of which, in the particularly preferred embodiment of the invention shown, runs at an angle α of 12° to the vertical V and extends through the tongue 15. For improved operability of the switching shaft 18, the axis D of the cutout is arranged at an angle α ≥ 0° and < 90° to the vertical V. The cutout consists of a large cylindrical section 29, a step 30, and a small cylindrical section 31. Step 30 contains the shoulder 32, consisting of its sub-shoulders 32a and 32b, and the shoulder 33, consisting of its sub-shoulders 33a and 33b, with sub-shoulder 33b being located in the Fig. 9 This is not apparent, as it has been omitted by the sectional view.

[0043] In the Fig. 10It becomes apparent that the first paragraph 32 and the second paragraph 33 are formed by grooves offset by 90° to each other and executed at different depths (see also Fig. 9 However, any other angles are also conceivable. The step 30, and thus also the steps 32 and 33, are penetrated by the small cylindrical section 31. In the illustrated, particularly preferred embodiment of the invention, the number of steps of varying depths is 2. In other embodiments of the invention not shown in the figures, any number of steps of varying depths can be present, which need not be designed as continuous grooves. Steps of varying depths formed radially on one side only, arranged around the central axis of the opening, are sufficient. The number of steps of varying depths is equal to the number of possible switching positions of the switching shaft 18 (see also Figures 12a, 12b and 12c ).

[0044] From the Figures 11a and 11b The geometry of the switching shaft 18 becomes apparent, consisting of a first cylindrical section 34, a projection 35, and a second cylindrical section 36. The second cylindrical section 36 has a base surface 22. The trigger spring 21 rests against this base surface 22 when installed.

[0045] The extension 35 has at least one contact shoulder 37 facing the first cylindrical section 34. In the particularly preferred embodiment of the invention shown here, the contact shoulder is divided into two partial surfaces 37a and 37b by the first cylindrical section 34. The two partial surfaces are thus at the same level in the axial direction.

[0046] In a particularly preferred embodiment, the first cylindrical section 34 has a Torx® drive 12. In other embodiments of the invention not shown, the drive can also be configured as a slot, Phillips, hex socket, or any other desired drive type.

[0047] The Figures 12a, 12b and 12c The figures show the trigger blade 15, the switching shaft 18 and the trigger spring 21. These figures are used to explain in more detail the possible switching positions of the switching shaft 18.

[0048] In the Figure 12a Figure 1 shows how the switching shaft 18 with the two partial surfaces 37a and 37b of the contact shoulder 37 is pressed by the trigger spring 21 against the partial shoulders 33a and 33b of the second shoulder 33 (see also Figure 2). Figures 10 , 11a and 11bIn this position, the trigger spring 21 is under the least preload, and the first cylindrical section 34 of the switching shaft 18 protrudes clearly from the trigger blade 15. This corresponds to the first possible switching position and the lower of the two adjustable trigger weights.

[0049] In the Figure 12b Figure 1 shows how the switching shaft 18, with its two partial surfaces 37a and 37b of the contact shoulder 37, is pressed by the trigger spring 21 against the partial shoulders 32a and 32b of the first shoulder 32. In this position, the trigger spring 21 is under less preload, and the first cylindrical section 34 of the switching shaft 18 protrudes less far from the trigger blade 15 than in the position shown in Figure 2. Fig. 12a The switch position shown corresponds to the second possible switch position and thus to the higher of the two adjustable trigger weights.

[0050] In the Fig. 12cThe switching shaft 18 with the two partial surfaces 37a and 37b of the mounting shoulder 37 rests against the stage 30. This does not correspond to any of the switching positions, but to the situation during the switching process, i.e., between the switching positions.

[0051] The necessary preparations and the procedure for switching between different trigger weights are explained below.

[0052] Preparation: 1. Pull out the rear housing pin 1 until it stops and fold down the upper housing part 2 from the lower housing part 5. 2. If the hammer 9 is still in the cocked position, it must be moved into the struck position by releasing the trigger 8 so that the switching shaft 18 becomes accessible.

[0053] Switching between different trigger weights: 1. Insert a suitable Torx® key into the Torx® drive 12 of the switching shaft 18 and press it downwards until the trigger spring 21 reaches its block dimension. 2. Rotate the switching shaft 18 a few degrees. 3. Release the Torx® key until the partial surfaces 37a and 37b of the contact shoulder 37 come into contact with the step 30 under the force of the trigger spring 21. 4. Continue rotating the switching shaft 18 until the extension 35 engages in one of the two shoulders 32 or 33 and the partial surfaces 37a and 37b of the contact shoulder 37 come into contact with the partial shoulders 32a, 32b or 33a, 33b.

[0054] The shift shaft can be rotated both counterclockwise and clockwise.

[0055] In the Figures 12a and 12b It becomes apparent that the first cylindrical section 34 of the switching shaft 18 protrudes from the tongue 15 to a different extent depending on the switching position.

[0056] Fig. 13The diagram shows the trigger 8 from above, and the markings 38 with a pictogram of a raised switching shaft 18 and 39 with a lowered switching shaft 18 are visible. Using these two markings, the user can clearly assign the current switching position to the current trigger pull weight. Fig. 13 A particularly preferred embodiment of the invention is shown, in which it is possible to select or switch between two different trigger weights. The two markings 38 and 39 are arranged on the trigger housing such that they are easily legible when the trigger 8 is installed in the lower housing part 5 and the upper housing part 2 is folded down. A higher number of possible switching positions is also conceivable, to which the user can assign the trigger weights by means of corresponding markings.

[0057] In further embodiments of the invention not shown, the inscriptions can be placed in any number at any other locations on the print 8.

[0058] In a further embodiment of the invention, not shown, a marking can be provided on the first cylindrical section 34 of the switching shaft 18 projecting from the tongue 15, which points to corresponding inscriptions depending on the switching position. The marking on the switching shaft would rotate around the axis D during switching operations, similar to the hand of a clock.

[0059] In another embodiment of the invention, not shown, no markings are applied to the trigger 8. In this case, the meaning of the switch positions can be explained, for example, in a corresponding operating manual. Reference symbol list

[0060] 1 Rear receiver pin 2 Upper receiver 3 AR-type weapon 4 Front receiver pin 5 Lower receiver 6 Front transverse hole in lower receiver 5 7 Rear transverse hole in lower receiver 5 8 Trigger 9 Hammer 10 Left pivot pin 11 Right pivot pin 12 Torx® drive 13 Trigger shaft subassembly 14 Trigger housing 15 Trigger blade 16 Disconnect 17 Hammer spring 18 Switch shaft 19 Hammer detent surface 9 20 Trigger blade detent surface 15 21 Trigger spring 22 Switch shaft base 18 23 Base surface in trigger housing 14 24 Finger surface on trigger blade 15 25 Rear stop lug 26 Rear stop surface 27 Front stop lug 28 Front Stop surface 29 Large cylindrical section of the opening in the trigger 15 30 Step of the opening in the trigger 15 31 Small cylindrical section of the opening in the trigger 15 32 First step 33 Second step 34 First cylindrical section of the switching shaft 18 35 Extension of the switching shaft 18 36 Second cylindrical section of the switching shaft 18 37 Mounting shoulder 38 Marking with aPictogram with raised shift shaft 18 39 Labeling with a pictogram with a lowered shift shaft 18

Claims

1. Trigger with incrementally adjustable trigger weight for weapons of the 'AR' type (3), characterized in that the trigger blade (15) has at least one opening, wherein the at least one opening has a step (30) and wherein the step (30) has at least two ledges (32) and (33) with different depths, and wherein a switching shaft (18) which has a first cylindrical section (34), at least one extension (35) and a second cylindrical section (36) is guided rotatably and axially displaceably in the opening and wherein the switching shaft (18) is pressed with its at least one bearing shoulder (37) against the step (30) or into one of the at least two ledges (32) and (33) with different depths through the force of a trigger spring (21) which is supported on a bottom surface (23) in the trigger housing (14) or on the bottom of the lower housing part (5) of the weapon.

2. Trigger according to Claim 1, characterized in that the switching shaft (18) has a drive for an operating tool on its first cylindrical section (34).

3. Trigger according to Claim 2, characterized in that the drive of the switching shaft (18) is designed as a Torx drive (12).

4. Trigger according to Claim 1, characterized in that the axis D of the opening is arranged at an angle α ≥ 0° and < 90° to the vertical V in the trigger blade (15).

5. Trigger according to Claim 1, characterized in that the trigger blade (15) is located in its initial position with the hammer (9) in the cocked state with its rear stop nose (25) resting on the rear stop surface (26) in the trigger housing (14).

6. Trigger according to Claim 1, characterized in that, in the fully actuated state, the trigger blade (15) rests with its front stop nose (27) against the front stop surface (28) in the trigger housing (14).

7. Trigger according to Claim 6, characterized in that, when the trigger blade (15) rests with its front stop nose (27) against the front stop surface (28) of the trigger housing (14) in the fully actuated state, the trigger spring (21) has not yet reached its solid length.

8. Trigger according to Claim 1, characterized in that at least one label is applied to the trigger (8), by means of which the user can clearly assign the present switching position to the corresponding trigger weight.

9. Trigger according to Claim 8, characterized in that the at least one label is applied to the trigger housing (14).

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