Gas guide adjustment structure of semi-automatic shotgun

Abstract

The invention discloses an emitted gas adjusting mechanism of a semi-automatic shotgun. The emitted gas adjusting mechanism comprises a gun barrel of the semi-automatic shotgun and an adjuster, wherein an emitted gas hoop is fixed on the gun barrel; the rear section of the emitted gas hoop is a gas room used for mounting a piston; an exhaust hole is formed in the wall of the rear part of the gas room; and the front section of the emitted gas hoop is an adjuster installation section; a first emitted gas hole is formed in an adjuster installation section; a second emitted gas hole communicated with the first emitted gas hole is formed in the gun barrel; the rear section of the adjuster is an adjusting section which is threaded fit with and positioned in the adjuster installation section; and the adjusting section can cover at least a part of the first emitted gas hole. According to the emitted gas adjusting mechanism of the semi-automatic shotgun, an emitted gas channel is short, so that the emitted gas channel can be prevented from blocking, and stepless adjustment of emitted gas amount can be achieved.

Description

technical field [0001] The invention relates to the field of firearms, in particular to a gas guide regulating structure for a semi-automatic shotgun. Background technique [0002] The gas guide adjustment system of firearms is mainly used to adjust the amount of gunpowder gas exported from the barrel to meet the energy demand of the system to complete automatic cycles such as bomb feeding and shell ejection. see figure 1 , figure 2 , the existing semi-automatic rifles and machine guns have a gas guide adjustment structure, which is composed of a piston 8, a gas guide 2, a regulator 3 and a gun barrel 1, etc., and generally has three gears of "big hole", "small hole" and "closed air" , the diameter of the air guide hole is mostly φ1.8~φ3.5, because the outer wall of the projectile warhead fired is made of metal material, and the edge of the air guide hole scrapes the material of the warhead very slightly (such as figure 1 ), the gas guide system regulates the energy stab...

AI Technical Summary

Problems solved by technology

The semi-automatic shotgun gas system is similar to the rifle and machine gun gas system, and the shotgun uses a plastic shell shotgun bullet. Larger air guide holes can meet the cycle energy of the automaton. Generally, the diameter of the air guide holes is φ2.5~φ6 (smaller for multiple holes, larger for single holes). When the bullet holder passes through the air guide holes, a bulge 91 is formed, which is easy to be guided. The air hole is cut, and the dropped plastic block enters the channel due to the long air guide channel (such as figure 2 ), forming a large block to the airflow, affecting the energy of the automaton system, which may lead to the failure of bomb feeding and shell ejection

At the same time, the shotgun is a civilian gun. Because there are many types of shotgun ammunition in the civilian market, it is difficult to meet the automatic cycle energy requirements of firing different types of ammunition by using a gas adjustment system with three levels of adjustment.

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