WORKING MODEL OF MINIATURE SEMIAUTOMATIC GUN Russian patent published in 2013 - IPC F41C3/00 F41A5/06 

FIELD: weapons and ammunition.

SUBSTANCE: proposed working model comprises case to house barrel, bolt, and rod with bolt return spring fitted thereon. Said case has thrust ledge to limit barrel axial displacement. Barrel breech end has bead while barrel outer surface has tooth-like ledges arranged regularly along barrel circumference. Bolt inner cavity accommodates guide bush with central bore to receive barrel and slots in number equal to that of teeth on barrel. Slots in bolt bush are located opposite the barrel teeth. Rod is rigidly locked in case. Said hollow rod accommodates barrel spring and pusher spring loaded to barrel bead. Force return spring applies to bolt significantly exceeds barrel spring force, direction of both springs being opposed.

EFFECT: higher reliability in fire with blank cartridges.

5 dwg