SMALL ARMS Russian patent published in 2001 - IPC

FIELD: small arms with bore locking by breechblock turning. SUBSTANCE: the weapon has a receiver, breech end, deflector, breechblock carrier engageable by means of a cam surface groove made on the breechblock, in which the firing-spring stops are turned relative to the mating groove in the breech end. The firing-pin stop has a chamfer parallel to the chamfer on the respective face of the breechblock groove. The deflector end surface has an inclined platform engageable with the inclined cam surface in the breechblock. The rear surface of the cam surface has a rectilinear platform providing for turn of the breechblock through the angle of turn of the breechblock through the angle of turn of the firing-spring stops. EFFECT: enhanced reliability of bore locking, simplified construction of the device. 5 dwg