A bracket for attaching the buttstock, containing a rail fixation mechanism for installing additional accessories and / or the barrel box cover

Abstract

The invention relates to small arms manufactured on the Kalashnikov (AK) system platform, specifically to means of attaching a telescopic stock to a standard barrel box. The bracket for attaching the stock is monolithic. The inner side (1) of the bracket is intended for installation inside the barrel box and the outer side (5) has a hole (6) with internal threading for securing the telescopic stock tube. The bracket contains a mechanism (8) for fixing the rail for attaching additional accessories and / or the cover of the barrel box in the form of a rectangular parallelepiped with lateral ends (9). The end (10) of the inner side of the bracket is solid, while the end (11) of the outer side of the bracket has a protrusion (12) for fixing the rail. At least one hole (13) is made in the top end of the fixing mechanism (8), in which a fixation push- button (14) with a push spring (15) is placed in a recess (16) of the bracket. The invention provides fixation of the rail for attaching additional accessories and / or the cover of the barrel box, a more stable aiming point during shooting and simplifying the procedure for replacing the rail.

Description

[0001] A bracket for attaching the buttstock, containing a rail fixation mechanism for installing additional accessories and / or the barrel box cover

[0002] The invention belongs to small arms manufactured on the Kalashnikov (AK) system platform, specifically to means of attaching a telescopic buttstock to a standard barrel box, additionally containing a mechanism for fixing a rail for attaching additional accessories and / or the barrel box cover.

[0003] Firearms are increasingly produced with various configurations or stock designs. Therefore, to enable, the attachment of a convenient and reliable stock for the shooter, a buttstock mounting bracket is usually used, allowing the attachment of the most comfortable stock. However, most buttstock mounting brackets for rifles and shotguns are not designed for fixing a rail for attaching additional accessories and / or the barrel box cover. Usually, the rail for attaching additional accessories and / or the barrel box cover has separate attachments, which can cause loosening during shooting, leading to unintentional deviation of the aiming point,- thus affecting shooting accuracy. Additionally, after each cleaning or maintenance involving partial disassembly of the firearm, sight adjustment (zeroing the weapon) is required to bring the weapon back to combat readiness.

[0004] The closest analogue taken as a prototype for the proposed invention is the buttstock mounting bracket described in the utility model patent No RU 174607 "Buttstock Mounting Bracket for Small Arms" (No2017110062; application date 03 / 27 / 2017; publication: 10 / 23 / 2017, bulletin No30, author: Morozov Pavel Vladimirovich (RU); patent holder: Limited Liability Company "ARMAKON" (RU), which is implemented as a Adapter for the "Monolith" telescopic buttstock in various modifications (https: / / armacon.su / catalog / stock-adapters / ). The buttstock mounting bracket is monolithic and has an inner surface of the bracket intended for installation inside the barrel box, which has a mounting block to standard attachment points, on the upper surface of which a threaded hole is placed for attachment to the buttstock by a screw and in the lower part a groove for attaching a T-shaped nut, as well as an outer surface of the bracket, which has a hole with internal threads intended for attachment of the telescopic buttstock pipe and a recess for securing the sling swivel. One of the variants of the design of this bracket for attaching the buttstock is that the hole with an internal thread is intended for securing the tube of the telescopic stock and is made solid. The manufacturer implements this version as the "Monolit-4" telescopic stock adapter.

[0005] A drawback of the above-mentioned bracket for attaching the buttstock is that the rail for mounting additional accessories and / or the barrel box cover is not fixed on the bracket for attaching the buttstock. In the standard configuration of a weapon developed on the AK platform, the barrel box cover is attached thanks to a hole on the rear side of the barrel box cover that engages with the protrusion on the reverse mechanism when installed. Such fixation of the barrel box cover is unreliable, and during firing, the barrel box cover may be movable. Consequently, the collimator or other optical sights and accessories will also be constantly movable, leading to the need for constant adjustment.

[0006] The invention is aimed at creating an improved design of a bracket for attaching the buttstock, which would ensure reliable fixation of the rail for mounting additional accessories and / or the barrel box cover, contributing to increased stability of the aiming point during shooting and its consistency after servicing the weapon. Additionally, it will increase the solidity of the weapon during firing and simplify the procedure for replacing the rail for mounting additional accessories and / or the barrel box cover, as well as its maintenance and repair.

[0007] The task is solved by a buttstock mounting bracket that contains a rail fixation mechanism for attaching additional accessories and / or the barrel cover. The bracket is monolithic and has an inner side intended for installation inside the barrel box, featuring attachment blocks to standard mounting points. On the upper surface, there is a threaded hole for attaching to the buttplate with a screw, and on the lower part, there is a groove for attaching a T-shaped nut. There is also an outer side with an internally threaded hole for attaching the telescopic stock tube, made solid, and a recess for fixing the sling swivel. The rail fixation mechanism for attaching additional accessories and / or the barrel cover is located above the longitudinal axis of the external side of the buttstock mounting bracket in the form of a rectangular parallelepiped. The side ends are solid, and the end on the external side has a protrusion for fixing the rail. At least one hole is located on the upper end of the fixation mechanism, accommodating a push-button fixator with upward pressure, supported by a compression spring placed in a longitudinal cylindrical recess of the buttstock mounting bracket. In an alternative embodiment, the protrusion is in the shape of rail grooves for attaching additional accessories and / or the barrel cover. In another embodiment, the protrusion is in the form of a T-shaped projection with recesses on the sides. In one of the embodiments, the outer side of the buttstock mounting bracket features symmetrical grooves beneath the push-button fixator, creating a seating area and reproducing the cross-section of the side walls of the barrel cover, connected to the rail for attaching additional accessories with screws and / or made monolithically. The task at hand is solved by the fact that the buttstock mounting bracket containing a rail fixation mechanism for attaching additional accessories and / or the barrel cover is monolithic. It has an inner side of the bracket intended for installation inside the barrel box. In one embodiment of the invention, the lateral ends of the fixation mechanism have at least one through hole, and the locking button has a through hole for fixation with a pin inside the bracket for attaching the buttstock. In an alternative embodiment of the invention, the rail for attaching additional accessories is mounted according to the MIL-STD-1913 (Picatinny) standard. The button in the invention embodiment may have a conical chamfer. In an alternative embodiment of the invention, the hole with an internal thread is intended for securing the tube of the telescopic stock and is located on the upper part of the outer side of the bracket, above the standard connecting points on the inner side of the bracket. The common features between the invention and the closest analog include the monolithic design of the buttstock mounting bracket with an inner side designed for installation inside the barrel box, which has a mounting block for standard connection points. On the top surface of this block, there is a threaded hole for screwing into the buttplate, and in the lower part, there is a slot for mounting a T-shaped nut. The outer side of the bracket has a hole with internal thread for securing the tube of the telescopic stock, made solid, and a recess for fixing the sling swivel. The technical result of the invention is achieved by the buttstock mounting bracket containing a rail fixation mechanism for attaching additional accessories and / or the barrel cover. It is placed above the longitudinal axis of the outer side of the bracket, in the form of a rectangular parallelepiped with lateral ends. The end of the inner side is solid, while the end of the outer side has a protrusion for fixing the rail for attaching additional accessories and / or the barrel cover. At least one hole is made on the upper end of the fixation mechanism, in which a pressable locking button is installed, protruding upwards, which is supported by a compression spring located in a longitudinal cylindrical recess in the bracket for attaching the buttstock. The proposed configuration of the buttstock mounting bracket containing a rail fixation mechanism for attaching additional accessories and / or the barrel cover is designed for reliable attachment of the buttstock and fixing the rail for attaching additional accessories and / or the barrel cover. This allows the user to securely fix the rail for attaching additional accessories and / or the barrel cover by engaging the grooves of the rail into the protrusion of the fixation mechanism of the bracket for attaching the buttstock and further securing it with a locking button. The mechanism for fixing the rail for attaching additional accessories and / or the barrel cover ensures the stability of the aiming point when the rail for attaching additional accessories and / or the barrel cover is repeatedly removed and installed during weapon servicing. Thanks to the proposed fixation mechanism, the rail for attaching additional accessories and / or the barrel cover is reliably fixed and held during weapon firing, which improves overall shooting performance. The proposed technical solution helps to eliminate play, improves the ergonomic qualities of firearms, and makes aiming and firing as comfortable and effective as possible. Additionally, during the servicing of firearms, the rail for attaching additional accessories and / or the barrel cover can be easily detached and replaced, unlike similar types of covers offered for AK rifles and their platform models.

[0008] The proposed buttstock mounting bracket is free from the above-mentioned drawbacks of analogs and solves the set task. The essence of the invention, its implementation, and the possibility of industrial application are explained using the following figures:

[0009] 1 - general view;

[0010] 2 - rear view of buttstock mounting bracket;

[0011] 3 - general view of the buttstock mounting bracket, with a cross-section of the upper part;

[0012] 4 - longitudinal section of the buttstock mounting bracket at the mounting location.

[0013] Where:

[0014] 1 - inner side of the bracket;

[0015] 2 - attachment block to standard mounting points;

[0016] 3 - threaded hole for attaching to the buttstock with a screw;

[0017] 4 - groove for attaching a T-shaped nut;

[0018] 5 - outer side of the bracket;

[0019] 6 - hole with internal thread for fixing the telescopic stock tube;

[0020] 7 - recess for fixing the swivel stud;

[0021] 8 - fixation mechanism;

[0022] 9 - lateral ends;

[0023] 10 - end of the inner side of the buttstock mounting bracket; 11 - end of the outer side of the buttstock mounting bracket;

[0024] 12 - protrusion;

[0025] 13 - hole;

[0026] 14 - fixation button;

[0027] 15 - pressure spring;

[0028] 16 - cylindrical recess of the bracket;

[0029] 17 - recesses forming the seating area;

[0030] 18 - through-hole in the lateral ends;

[0031] 19 - through-hole in the fixation button;

[0032] 20 - conical bevel;

[0033] 21 - pin;

[0034] 22 - rail for attaching additional accessories and / or the barrel cover.

[0035] The causal relationship between the set of features claimed and the technical result achieved is as follows:

[0036] The buttstock mounting bracket containing a rail fixation mechanism for attaching additional accessories and / or the barrel cover (Fig. 1) is made monolithic. The buttstock mounting bracket has an inner surface of the bracket 1 intended for installation inside the barrel box, which has attachment blocks to standard connection points 2, with a threaded hole on the top surface for attachment to the buttstock with a screw 3 and a groove at the bottom for attachment of a T-shaped nut 4. Additionally, the buttstock mounting bracket has an outer surface of bracket 5, which has a hole with internal thread intended for securing the tube of the telescopic buttstock 6 made solid, and a recess for fixing the sling swivel 7 (Fig. 2). The hole with internal thread intended for securing the tube of the telescopic buttstock 6 can be located in the upper part of the outer surface of the bracket 5 above the attachment blocks to standard connection points 2 of the inner surface of the bracket 1 according to one of the embodiments. This location of the hole with internal thread for securing the tube of the telescopic buttstock allows raising the buttstock line, which is an extension of the movement line of the bolt carrier with the bolt and allows using optical sights without using cheek rests.

[0037] The hole with internal thread intended for securing the tube of the telescopic buttstock 6 is made solid. The internal thread intended for securing the tube of the telescopic buttstock has a size predominantly of 1-13 / 16-16 UN. On top of the buttstock mounting bracket, there is a rail fixation mechanism 8 for attaching additional accessories and / or the barrel cover 22. The fixation mechanism is located above the longitudinal axis of the outer side of the bracket and is in the form of a rectangular parallelepiped with lateral faces 9.

[0038] In one embodiment of the invention, the lateral faces 9 of the fixation mechanism may have at least one through hole intended for fixing the locking button 14 with a pin 21 in the body of the buttstock mounting bracket. The end on the inner side of the buttstock mounting bracket 10 is made solid, while the end on the outer side of the mounting bracket 8 for attaching the device 11 has a protrusion 12 with the ability to fix the rail for attaching additional accessories and / or the barrel cover 22. The protrusion can be in the form of grooves that replicate the rail for attaching additional accessories and / or the barrel cover. In the embodiment shown in Fig. 2 the protrusion is in the form of a T-shaped protuberance with recesses on the sides. On the top end of the fixation mechanism, there is at least one hole 13 where the locking button 14 with a push-up feature is installed, which rests on the installed pressure spring 15 located in a longitudinal cylindrical recess of the bracket 16 for attaching the stock, as shown in Fig. 3. In one of the embodiments, the locking button 14 has a through hole 19 for fixation by a pin 21 in the body of the buttstock mounting bracket. The locking button can be designed with a conical chamfer 20. As shown in the illustration in Fig. 4 the fixation mechanism secures the rail for attaching additional accessories 22. However, for convenience, some manufacturers produce barrel covers together with the rail for attaching additional accessories monolithically or by various types of connections. Therefore, in the proposed embodiment of the invention, the rail for attaching additional accessories can be made together with the barrel cover monolithically or fixed with screws. Additionally, the grooves for attaching additional accessories shown in the drawings can also be made on the barrel cover itself, allowing it to be secured using the proposed fixation mechanism.

[0039] In one of the embodiments of the invention, there are symmetrical slots 17 on the outer side of the buttstock mounting bracket under the locking button fixture, creating a seating place for the barrel cover and replicating a cross-section of its side walls (Fig. 1). In this version, the barrel cover is connected to the rail for attaching additional accessories using screws and / or made monolithically. The existence of slots that create a seating place on the buttstock mounting bracket prevents dirt and dust from entering the barrel cover, reducing the frequency of firearm cleaning and extending its service life. Additionally, the rail for attaching additional accessories 22 in this embodiment follows the MIL-STD-1913 (Picatinny) standard. The buttstock mounting bracket with a rail fixation mechanism for attaching additional accessories and / or the barrel cover 22 in the installation position is shown in Figure 4 (longitudinal section).

[0040] The buttstock mounting bracket with a rail fixation mechanism is used as follows:

[0041] 1. Remove the standard buttstock.

[0042] 2. Unscrew the grip attachment screw and remove the T-shaped nut.

[0043] 3. Install the buttstock mounting bracket into the barrel box. Install the T- shaped nut into the buttstock mounting bracket, and screw in the grip attachment screw.

[0044] 4. Insert the screw into the threaded hole for the attachment to the cheekpiece located on the upper surface of the attachment block to the standard connection points and screw it in. 5. Insert the telescopic stock tube into the threaded hole for attachment, located on the outer surface of the buttstock mounting bracket, and screw in the threaded part.

[0045] 6. Insert the swivel stud into the recess for the swivel lock and lock it with a rotating lock. Tighten the swivel stud with a lock nut to secure the stock tube in position.

[0046] 7. Take the rail for attaching additional accessories and / or the barrel cover, hook it onto the protrusion on the fixation mechanism with the slots, and slide along the barrel box so that the opposite side of the rail is in the standard position of the barrel box. The locking button enters the hole on the rail for attaching additional accessories and / or the barrel cover, securely fixing it due to the compression spring. Additionally, the locking button can be secured with a pin by inserting the pin through the through holes of the lateral ends and the through hole of the locking button.

[0047] To remove the rail for attaching additional accessories and / or the barrel cover, the pin is pulled out, the locking button is pressed, and the rail for attaching additional accessories and / or the barrel cover is drawn in the stock direction, making it easy to remove. Thus, the new features interacting with the known features achieve a unified technical result, disclosing an improved design of the buttstock mounting bracket with a rail fixation mechanism for attaching additional accessories and / or the barrel cover, ensuring reliable fixation of the rail and stability of the aiming point during shooting and maintenance. The replacement procedure of the rail for attaching additional accessories and / or the barrel cover becomes more convenient for servicing and repairs.

[0048] After describing the best implementation of this invention, it becomes evident that various modifications within the scope of the disclosed claims are possible.

Claims

AMENDED CLAIMS received by the International Bureau on 20 June 2025 (20.06.2025)Claims

1. A bracket for attaching the stock, containing a mechanism for fixing the rail for attaching additional accessories and / or the cover of the barrel box, made monolithic, has an inner side of the bracket 1 intended for installation inside the barrel box, which has mounting blocks to the standard connection points 2 on the upper surface of which there is a threaded hole for attaching to the buttstock with a screw 3 and in the lower part there is a groove for attaching a T-shaped nut 4 and the outer side of bracket 5 which has a hole with internal threads 6 intended for attaching a telescopic stock tube, is solid and has a recess for fixing a sling swivel 7 characterized in that the bracket for attaching the stock contains a fixing mechanism 8 of the rail for installing additional accessories and / or the cover of the barrel box, located above the longitudinal axis of the outer side of the bracket for attaching the stock, in the form of a rectangular parallelepiped, which has lateral faces 9 the end face of the inner side of the bracket for attaching the stock 10 is solid, and the end face of the outer side of the bracket for attaching device 11 has a protrusion 12 with the ability to fix the rail for mounting additional accessories and / or the cover of the barrel box, at least one hole 13 is made in the top face of the fixing mechanism, in which a push-button latch 14 is installed with the ability to press, protruding upward, which rests on the installed pressing spring 15 located in a longitudinal cylindrical recess of the bracket 16 for attaching the stock.

2. A bracket for attaching the stock, containing a mechanism for fixing the rail for installing additional accessories and / or the cover of the barrel box, according to point 1 is characterized in that the protrusion is made in the form that reproduces the slots of the rail for installing additional accessories and / or the cover of the barrel box.

3. A bracket for attaching the stock, containing a mechanism for fixing the rail for installing additional accessories and / or the cover of the barrel box according to point 1 , is characterizedin that the protrusion is made in the form of a T-shaped protrusion with recesses on the sides.

4. The bracket for attaching the stock, containing a mechanism for fixing the rail for attaching additional accessories and / or the cover of the barrel box according to point 1 is characterized in that the fact that on the outer side of the bracket for attaching the stock, symmetrically arranged under the catch button on both sides are grooves 17 which form a seat and reproduce the cross-section of the side walls of the cover of the barrel box, which is connected to the rail for attaching additional accessories by screws and / or made monolithic.

5. The bracket for attaching the stock, containing a mechanism for fixing the rail for attaching additional accessories and / or the cover of the barrel box according to point 1 is characterized in that the fact that the lateral ends 9 of the fixing mechanism have at least one through hole 18 and the catch button 14 has a through hole 19 intended for its fixation with a pin 21 in the body of the bracket for attaching the stock.

6. The bracket for attaching the stock, containing a mechanism for fixing the rail for attaching additional accessories and / or the cover of the barrel box according to point 1 is characterized in that the fact that the rail for attaching additional accessories has mounting according to the MIL-(STD)-1913 standard (Picatinny).

7. The bracket for attaching the stock, containing a mechanism for fixing the rail for attaching additional accessories and / or the cover of the barrel box according to points 1 or 5 is characterized in that the fact that the catch button can be made with a conical chamfer 20.

8. The bracket for attaching the stock, containing a mechanism for fixing the rail for attaching additional accessories and / or the cover of the barrel box according to point 1 is characterized in that the fact that the hole with internal thread intended for securing the telescopic stock pipe 6 is located on the upper part of the outer side of the bracket 5 above concerning the attachment block to the standard connecting points 2 of the inner side of the bracket 1.

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