SMALL ARMS Russian patent published in 1998 - IPC

FIELD: readjustable hand small arms. SUBSTANCE: in small arms, using a folding barrel, receiver with an opening and barrel packing installed in it, piston with a cup and firing spring, wedge and a spring-loaded cross bar, the barrel breech piece is drilled put in diameter and length of a small-caliber cartridge and furnished with an ejector, and the piston is made with an axial threaded hole. For use in the pneumatic variant the small arms is furnished with a steel bush of the cartridge chamber and a screw with a tapered head screwed in the piston threaded hole. For use in the fire-arm variant the small arms is furnished with a breechblock-firing pin mechanism in the form of a bush, and a firing pin spring-loaded by a conical spring and having two symmetrically arranged teeth, installed instead of the barrel packing in the receiver opening, and with a firing spring of a lower rigidity. EFFECT: improved design. 15 dwg