RU203565U1 - OUTER BRAKE-COMPENSATOR - Google Patents

Abstract

This utility model relates to small arms, namely to additional devices for SAIGA-9 (PP-19-01) carbines and other civilian rifled weapons based on the design of Kalashnikov assault rifles. The technical result provided by the given set of features is the stabilization of the position of the weapon barrel relative to the aiming line. Muzzle brake-compensator, consisting of a housing containing a gas chamber with holes, side windows with partitions and a risk, and the holes are located at an angle of 35 degrees to each other, and the two holes are located symmetrically relative to the XZ plane, and the third hole is shifted to the right.

Description

This utility model relates to small arms, namely to additional devices for SAIGA-9 (PP-19-01) carbines and other civilian rifled weapons based on the design of Kalashnikov assault rifles.

The muzzle brake-compensator for cartridge 9 * 19 SAIGA-9 ("YAROVIT") is a removable muzzle attachment with a lock nut, which can significantly reduce the spread of the middle point of impact and the bounce of the weapon when firing. In addition, with the use of a muzzle brake-compensator, recoil is reduced and partially - a flash when fired. The weapon becomes more controllable and stable, which has a positive effect on the accuracy and accuracy of fire.

Known devices are designed to reduce vibrations and move the barrel from the line of sight, scattering powder gases and light flash, for example, "Bayonet-flame arrester double Yu.V. Pavlova "(Patent No. 2119634)," A device for reducing barrel vibrations during projectile departure "(Patent No. 2124171). The technical solutions proposed in the prototypes are aimed at increasing the concealment of the shot, reducing the amplitude of the barrel vibrations after the shot, but they do not solve an important problem inherent in automatic weapons based on the design of the Kalashnikov assault rifle - moving the barrel up and to the right after the shot.

The problem to be solved by the claimed utility model is to compensate for oscillations and characteristic displacement of the weapon barrel from the aiming line to reduce the spread of the midpoint of impact.

The technical result provided by the given set of features is the stabilization of the position of the weapon barrel relative to the aiming line.

The utility model is illustrated by the figure, which shows the appearance of the claimed product in the state mounted on the barrel.

The muzzle brake-compensator consists of a housing 1 and a lock nut 2. The walls of the housing 1 and the section of the barrel form a gas chamber 3. The gas chamber 3 contains three holes 4 that form jet streams. In the housing 1 there are also side windows 5 with partitions 6. On the wall of the housing 1 there is a risk 7. The geometry of the holes 4 calculated taking into account the gas dynamics, their location in combination with the inclination of the walls in the front of the device create a moment of forces compensating for the barrel toss up.

The inventive muzzle brake - the compensator is mounted on the barrel cut and held in a given position with a lock nut. The correspondence of the position of the active elements of the muzzle brake-compensator is ensured by aligning the risks 7 with the axis of the rear sight slot.

Flame suppression and removal of powder gases is carried out through the side windows 5 in the housing 1. The partitions 6 of the side windows 5 are chamfered to compensate for the recoil energy.

Hole diameters 4 are calculated using the formula:

where D - hole diameter 4, mm;

G - gas consumption during the shot;

Н - gas pressure in chamber 3, taken equal to 350 MPa.

In this case, it is taken into account that the pressure can be in the range up to 400-450 MPa, for example, for cartridge 9 * 19 7N21, which leads to a calculated increase in the diameter of compensation holes in versions of the muzzle brake used for weapons with a more powerful cartridge.

Holes 4 are located at an angle of 35 degrees to each other, two holes are located symmetrically relative to the XZ plane, and the third hole is offset to the right. This position, immediately after the bullet leaves the bore, forms jet streams of powder gases, which prevent the weapon from moving to the right and up. Next, the propellant gases are removed to the sides of the chamber axis through the side windows 5. At the same stage, the light flash is partially extinguished.

The muzzle brake-compensator is made of 40X alloy steel or VT-1 titanium. Weight of product parts made of 40X steel: 187 grams, nut - 22 grams, set weight - 209 grams.

Blackening of the muzzle brake-compensator is carried out by dyeing with polymer high-temperature gun paint, or by oxidation.

The muzzle brake-compensator is attached to the barrel of the weapon on the standard thread M16x1 (right) without additional adapters and the use of a special tool. To tighten the locknut 2, a standard wrench is used, for which cuts are made on the locknut 2. The side surfaces of the locknut 2 and the rear of the muzzle brake-compensator have mesh corrugation in accordance with GOST 21474-75 for ease of screwing on and off by hand.

The claimed utility model meets the requirements of the Russian Federation of Practical Shooting (IPSC in the Russian Federation) for carbines in the "Standard" class (see the Rules of the Sport "Practical Shooting" approved by Order of the Ministry of Sports of the Russian Federation No. 843 dated October 2, 2017). The version of the muzzle brake-compensator for sporting weapons is produced with a modification of the dimensions depending on the power of the cartridge used.

If necessary, the claimed utility model can be mounted on a 9 mm submachine gun "VITYAZ-SN" (PP-19-01), with the ability to fire both single and automatic fire.

The claimed device has been tested with the possibility of firing with all civilian, combat and special pistol cartridges of 9 * 19 caliber.

The claimed utility model provides a significant reduction in the spread of the average point of impact and bounce of the weapon when firing, and increases the concealment of the shot.

Claims (1)

Muzzle brake-compensator, consisting of a housing containing a gas chamber with holes, side windows with partitions and a risk, and the holes are located at an angle of 35 degrees to each other, and the two holes are located symmetrically relative to the XZ plane, and the third hole is shifted to the right.

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