03 type rifle automat

Abstract

The present invention discloses a 03 type rifle automat, comprising a piston sleeve, a piston rod, a piston spring, a gunlock frame, a gunlock and a return spring, wherein the piston sleeve is connected to an extract opening above a gun barrel; the piston rod is disposed in the piston sleeve; the piston spring is disposed on the piston rod between a piston disc at a front end of the piston rod and a spring seat disposed on the gun barrel; the return spring of the piston rod is disposed in a spring hole of the gunlock frame; the other end of the return spring is disposed on a spring seat at aninner wall of a rifle cartridge receiver; a step through hole is disposed at the bottom centre of the spring hole of the gunlock frame; an extension rod connected to a pushing face of the piston rod passes through the through hole; and a tail end of the extension rod is provided with a limit weight for limiting the recoil stroke of the gunlock frame. A locking lug radially projected at the front end of the gunlock is switched and paired with a locking tooth at the tail end of the gun barrel. The automat uses a recoil force of a piston assembly to neutralize the redundant recoil after a gunlock assembly is recoiled in place, and the recoil stroke is compressed. Under a condition that the gun length is determined, the length of the cartridge receiver can be shortened, so that the gunlock iscompact and the weight is reduced; or the length of the gun barrel is increased, so that the initial speed of bullets is increased; a gun body is stable during shoot, and the shooting average of a running fire is improved.

Description

technical field [0001] The invention relates to a modern military light weapon, in particular to an 03-type automatic rifle. Background technique [0002] At present, there are three types of automatic rifles equipped by our army, namely: Type 81, Type 95 and Type 03. An automatic rifle is a rifle that can continuously fire bullets. The continuous firing is mainly completed by an automatic machine, which is composed of several parts. Take the 03-type rifle automatic machine as an example, the automatic mechanism includes a piston assembly and a bolt assembly. The piston assembly includes a piston barrel, a piston rod and a piston spring. The gas after the explosion of the gun powder pushes the piston rod backward through the air outlet of the gun barrel, forcing the bolt frame of the bolt assembly to move, so that the bolt rotates until the lock between the barrel and the bolt is opened. The piston rod exits the piston barrel, the air pressure is released, and is back-flu...

AI Technical Summary

Problems solved by technology

In order to facilitate the carrying and operation of the rifle, the length of the rifle is usually limited. Except for the butt, the remaining length of the rifle is the length of the barrel plus the length of the receiver. If the receiver is long, the barrel must be shortened. The speed and accuracy of fired bullets will decrease, and the performance of the rifle will decrease

Therefore, overcoming the defect of the 03-type rifle receiver being too long has become the key to improving its performance.

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