MULTICHARGE SPRING-PISTON SMALL AIR ARMS (GUN, RIFLE) Russian patent published in 2013 - IPC F41B11/00 

FIELD: weapons and ammunition.

SUBSTANCE: spring-piston small air arms (gun, rifle) include a barrel with a foresight on one end and coupling with girder locking device on the other end, barrel receiver with a yoke on the end, which is hinged to the barrel coupling, helical firing spring, piston with a cup on the end and a back-plate, which are located inside the barrel receiver, and it is provided at the receiver top with adjustable sight leaf, stock of gun type with a handle, which is attached with screws to barrel receiver; arming lever mechanism with locking device, which is kinematically connected to the piston and to the trigger of trigger mechanism, which is fixed at the stock bottom, which is externally covered with a safety clip. Barrel receiver is equipped with additional cavity formed between pneumatic cylinder bottom of receiver housing and yoke of receiver due to transverse separation of barrel receiver in that place into two parts and serving as a cavity to arrange multicellular drum with bullet holes in it. Rotation of multicellular drum with bullets in the cavity of barrel receiver is kinematically connected to lever mechanism of piston setting to the armed position. Separated parts of barrel receiver are rigidly connected to each other by means of annular cylinder with an opening on the lateral side, which serves for drum loading with bullets to the cavity of barrel receiver.

EFFECT: providing possible multiple firing without manual re-charging of barrel with bullets after each gunshot.

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