FEEDING MECHANISM Russian patent published in 2003 - IPC

FIELD: small arms, pump action weapons of bull-pup configuration with two parallel box- shaped magazines. SUBSTANCE: feeding mechanism includes pair of immobile magazines to feed ammunition from two sides of weapon, multiposition drum unit placed in its socket-bearing, in breech part of tubular guide of mobile barrel-lock showing two degrees of freedom of motion and forming releasable joint with drum unit that is equipped with fixing member, when barrel-lock is disconnected, bushing of mobile striker, cartridge separator for selective passage of cartridge from both sides of weapon, multiposition unit fixing barrel-lock through specified angle of turn of barrel around its longitudinal axis, wedge-shaped protrusion of cartridge chamber and recess in muzzle butt of drum corresponding to it, additional spring-loaded slider-guide of cartridge, movable coupling of drum flange with bearing plate of separable block of firing mechanism located in grooves of back plate of guide of barrel-lock, collar of separator with window for passage of fed cartridge, spherical recesses in collar for locking case or feeding device of magazine, movable coupling of muzzle protrusion of tubular guide of barrel-lock and set of interconnected parallel grooves of cylindrical forestock joined to barrel-lock by means of muzzle coupling and fitted with location mark. Given feeding mechanism can be used both in plain-barrel and rifled pump action weapon. EFFECT: increased amount of ammunition of weapon. 5 cl, 7 dwg _