RU2821290C1 - Belt-fed light machine gun - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: belt-fed light machine gun comprises breech casing with insert rigidly secured thereat with a barrel fixed in it, and back plate with butt attached thereto, movable automatic system and detachable breech casing bottom part. Bottom part is connected to the breech casing by an axis with possibility of rotation of the bottom part of the breech casing and is fixed with a latch from behind. Trigger mechanism is located in the breech casing, the trigger is located in the bottom part of the breech casing.

EFFECT: improved operational characteristics of the machine gun, increased reliability of operation.

3 cl, 2 dwg

Description

The invention relates to small arms and can be used in light machine guns.

The receiver of a modular automatic weapon is known (RF patent No. 166910 dated 03/04/2016, F41A11/04), containing a base module consisting of a U-shaped guide with an insert, an eye and guide protrusions for the moving links of the automation, and a trigger box with two eyes for connection to the base module. The butt of the weapon is attached to the trigger box.

The disadvantage of this device is the low performance due to the impact of the moving parts in the rearmost position on the rear wall of the trigger box, which can lead to breakage of the axis connecting the base module and the trigger box.

A firearm with simplified disassembly is known (RF patent No. 2470247 dated October 3, 2008, F41A11/02), including a receiver, a barrel, a bolt assembly, a folding stock, a removable lower part, and a means for locking the lower part.

The disadvantage of this device is low performance due to the impact of the moving parts in the rearmost position on the locking unit of the lower part, which can lead to breakage of the said unit.

The objective of the invention is to improve the performance characteristics of a belt-fed light machine gun.

The technical result consists in increasing the reliability of operation of a belt-fed light machine gun due to the fact that the impact of the movable automation system, when reaching the rearmost position, is perceived by the butt plate, which forms a rigid structure with the receiver, and the location of the trigger in the removable lower part of the receiver protects against accidental shooting, in reducing dispersion when firing due to a decrease in the overturning moment that occurs when the machine gun recoils when fired, because this design allows the centerline of the barrel and the centerline of the butt to be placed on the same line and allows mechanical sighting devices to be placed on a rigid receiver.

The task is achieved by the fact that a belt-fed light machine gun includes a receiver with a liner rigidly mounted on it, in which the barrel is fixed, and a butt plate, to which the butt is attached, a movable automation system, a removable lower part of the receiver, connected at the front to the receiver by axis with the ability to rotate the lower part of the receiver, and a rear fixed latch, a trigger mechanism located in the receiver, with the trigger located in the lower part of the receiver. The receiver contains guides for the movable automation system. On top of the receiver there is a Picatinny rail for installing optical-electronic and auxiliary equipment.

The essence of the invention is illustrated by drawings, which show:

in fig. 1 - general view of a light machine gun;

in fig. 2 - general view of a light machine gun with the lower part of the receiver disconnected.

A belt-fed light machine gun contains a receiver 1 with an insert 2 rigidly mounted on it, in which the barrel 3 is fixed, and a butt plate 4, to which the butt 5 is attached, a movable automatic system 6, and a removable lower part 7 of the receiver. The lower part 7 of the receiver is connected from the front to the receiver 1 by means of an axis 8. In the insert 2 there is a hole 9 for the axis 8, on which the lower part 7 of the receiver rotates without disconnecting from the receiver 1, which allows for cleaning, lubrication, maintenance and loading machine gun. At the rear, the lower part 7 of the receiver is fixed with a latch 10. In the butt plate 4 there is a cutout 11 for the latch 10. In the receiver 1 there is a trigger mechanism 12, separated from the trigger 13, which is located in the lower part 7 of the receiver, which protects when the lower part is open 7 receiver from an accidental shot. The receiver 1 has guides 14 for moving the movable automation system 6 along them. On top of the receiver 1 there is a 15-type Picatinny rail for installing optical-electronic and auxiliary equipment. In the lower part 7 of the receiver there is a magazine 16 with a belt feed, a safety bracket 17 and a control handle 18. The movable automation system 6 consists of a set of moving parts of the weapon that ensure the execution of the small arms automation cycle, and this can be a bolt frame with a bolt, a blowback bolt, etc.

During the firing process, the movable automatic system 6 moves backward and in the rearmost position is limited by the butt plate 4, to which the butt plate 5 is attached. Thus, the receiver 1, the butt plate 4 and the butt plate 5 form a rigid and durable structure that absorbs the recoil energy of the weapon when fired and the impact energy of the moving parts in the rearmost position. In this case, the lower part 7 of the weapon's receiver is unloaded, which allows it to be made from less durable and lightweight materials.

The proposed design of a belt-fed light machine gun improves the operational characteristics of the machine gun by increasing operational reliability due to the fact that the impact of the movable automation system, when reaching the rearmost position, is perceived by the butt plate, which forms a rigid structure with the receiver; the location of the trigger in the removable lower part of the receiver protects against accidental shot, as well as reducing dispersion when firing due to a decrease in the overturning moment that occurs when the machine gun recoils when fired, because this design allows the centerline of the barrel and the centerline of the butt to be aligned and allows mechanical sighting devices to be placed on a rigid receiver.

Claims (3)

1. A belt-fed light machine gun, comprising a receiver with a liner rigidly mounted on it, in which the barrel is fixed, and a butt plate, to which the butt is attached, a movable automation system, a removable lower part of the receiver, connected in front to the receiver by means of an axis with the possibility of turning the lower part of the receiver, and behind a fixed latch, the trigger mechanism is located in the receiver, while the trigger is located in the lower part of the receiver. 2. A light machine gun according to claim 1, characterized in that the receiver contains guides for the movable automation system. 3. A light machine gun according to claim 1, characterized in that on top of the receiver there is a Picatinny rail for installing optical-electronic and auxiliary equipment.