WEAPON ASSEMBLY CHARACTERISTICS Russian patent published in 2008 - IPC F41A5/00 F41A7/00 

FIELD: weapon and ammunition.

SUBSTANCE: bolt-mechanism contains sliding interconnected spring-loaded gas piston and embracing guide rail. The gas piston is cartridge-case-like with gas aperture in its wall and having the T-shaped breech end face with cross-section components supported on sides of upper longitudinal window breech section of telescopic slide by analogy to pistol casing bolt. Specified window is used for gas engine passage with aperture coaxial to gas channel formed in wall of engine cartridge-case-like guide rail. When upper longitudinal cover is closed, metal chill pad of the latter forms sliding joint with cartridge-case-like guide rail for gas piston, and with gun telescopic slide surface adjoining upper longitudinal cover.

EFFECT: optimal method of gas engine assembly.

3 cl, 3 dwg