FIELD: automatic small arms with underbarrel tubular magazine for ammunition feed without cartridge belts, located in parallel with barrel axis. SUBSTANCE: submachine gun has a barrel installed on the extension, firing pin kinematically linked with the hammer by means of the trigger mechanism, breechblock with a gas-driven counterrecoil mechanism, grip and a tubular screw magazine parallel to the barrel. The magazine is installed coaxially to the barrel and fastened to the barrel extension with an injection gap. EFFECT: reduced overall dimensions and mass, increased magazine capacity, which additionally functions as a jet pump at shooting for ejection of cooling atmospheric air to the barrel, which enhances its survivability, enhanced stability at automatic firing. 2 cl, 8 dwg
