RU2519333C1 - Self-operated gun - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: self-operated gun comprises an upper part (1) and a lower part (2) of the barrel receiver. The upper part (1) the barrel receiver is fixed to the barrel (3) with under-barrel tube (4). On the front side (13) of the lower part (2) of the barrel receiver the stop (12) and the clamping screw (10) are mounted, which interacts with the upper part of the barrel receiver. The stop (12) has a cylindrical shape, it is located in the under-barrel tube (4) and is provided with a guide bevel (14), on the stop the groove (15) is also provided.

EFFECT: increased reliability and accuracy of mounting the barrel receiver in the gun.

2 cl, 4 dwg

Description

The invention relates to weapons technology, namely to self-loading rifles.

Known self-loading shotgun MR-133K (catalog "Izhevsk Mechanical Plant. Baikal", 2004, p.19), containing separately executed butt, receiver and base of the trigger mechanism. In the butt is a coupling screw that interacts with the receiver and with the base of the trigger mechanism. From the pitching of the stock relative to the receiver protects the protrusion made in the rear of the base of the trigger mechanism, placed in the response groove on the stock.

In the known self-loading shotgun there is a danger of inaccurate location of the base of the trigger mechanism relative to the receiver. In addition, as a result of large dynamic loads that occur during firing, it is possible to crush both the protrusion in the rear of the base of the trigger mechanism, and the response groove on the butt, which leads to a pitching of the base of the trigger mechanism relative to the receiver. All this reduces the operational characteristics of the gun.

Also known is the Akdal MKA 1919 smoothbore self-loading shotgun (akdal mka 1919 / 45-1-0-188), taken as a prototype containing a receiver made in two parts. The barrel and the underbarrel tube are attached to the top of the receiver. The lower part of the receiver containing the store receiver, pistol grip, trigger guard and butt, made in the form of a single module. At the front end of the lower part of the receiver there is an emphasis of a complex (H-shaped) configuration, interacting with mating grooves made on the upper part of the receiver.

A disadvantage of the known device is that it does not prevent the possibility of pitching of the lower part of the receiver relative to its upper part. At the same time, the emphasis on the lower part and reciprocal grooves on the upper part of the receiver complicate in shape complicate the assembly and disassembly of the weapon and reduce the manufacturability.

The aim of the claimed invention is to increase the reliability and accuracy of mounting the receiver in weapons.

The problem is solved in that in a self-loading rifle containing the upper part of the receiver, to which the barrel and the underbarrel tube are attached, the lower part of the receiver with an emphasis on its front end and the coupling screw installed in the lower part of the receiver and interacting with the upper part of the receiver boxes, according to the invention, the emphasis is cylindrical in shape, placed in an under-barrel tube and provided with a guide bevel. On the stop a groove is made.

The claimed invention has a simple and reliable design, increases the accuracy of attachment and reliably prevents the rolling of the lower part of the receiver relative to its upper part, simplifies the process of assembling and disassembling weapons, improves manufacturability.

The invention is illustrated by drawings, which depict:

figure 1 is a General view of a self-loading shotgun in the context (the lower part of the receiver and butt made in the form of a single part);

figure 2 - a view of figure 1;

figure 3 - view B in figure 2;

figure 4 is a General view of a self-loading shotgun in the context (butt made removable).

The device comprises an upper part 1 (Fig. 1) and a lower part 2 of the receiver. To the upper part 1 of the receiver is attached a barrel 3 with an underbarrel tube 4. The lower part 2 of the receiver, containing the butt 5, the receiver 6 of the store, the handle 7 and the bracket 8, is made in the form of a single part. In addition, the butt 5 (figure 4) can be made removable, in this case, the lower part of the receiver 2 contains a receiver 6 (figure 1) of the store, the handle 7 and the bracket 8, made in the form of a single part. The magazine 6 is inserted into the receiver 6. In the butt 5 of the lower part 2 of the receiver there is a coupling screw 10 interacting with the rear end 11 of the upper part 1 of the receiver. A cylindrical stop 12 is made at the front end 13 (Fig. 2) of the lower part 2 of the receiver, is placed in the under-barrel tube 4 and has a guiding bevel 14 (for guiding the cartridges into the barrel chamber). In addition, in the upper part of the cylindrical stop 12, a groove 15 is made for the shutter ridge (not shown).

When assembling weapons, it is necessary to insert a cylindrical emphasis 12 (Fig. 1) of the lower part 2 of the receiver into the under-barrel tube 4, mounted on the upper part 1 of the receiver: combine the upper 1 and lower 2 parts of the receiver and secure both parts of the receiver with a tightening screw 10.

Claims (2)

1. Self-loading shotgun containing the upper part of the receiver, to which the barrel and the underbarrel tube are attached, the lower part of the receiver with an emphasis on its front end and the coupling screw installed in the lower part of the receiver and interacting with the upper part of the receiver, characterized in that the emphasis has a cylindrical shape, placed in the underbarrel tube and provided with a guide bevel. 2. Self-loading shotgun according to claim 1, characterized in that the groove is made on the stop.

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