AUTOMATIC SMALL ARMS Russian patent published in 2003 - IPC

FIELD: weaponry. SUBSTANCE: invention can be employed is various designs of automatic small arms with free bolt and firing-pin mechanism of cock type. Automatic small arms includes enclosure, frame of firing-pin mechanism with pistol grip and back plate produced as one unit-box by method of injection moulding from plastic material, for instance, glass-filled polyamide. Box houses all units and parts of weapon. Barrel is put on axle and is installed in front part of box. Bolt comes in the form of L-shaped part which longer side is located under barrel and which shorter side is positioned under breech piece. Guides amounting to two as minimum are made in the form of T-shaped protrusions on barrel, grooves are made in longer part of bolt facing outer surface of barrel. Rear surface of barrel has bevel made at acute angle with reference to its vertex facing back plate. Working surface of cock can interact with striker in extreme front position of bolt. Box-shaped magazine is installed in throat made in forestock, rear side of forestock has protrusions positioned in grooves of box. Front side of forestock carries tenon located in hole made in washer fixed on front part of tube mounted on barrel. Rear part of tube carries yoke fastening together barrel and box. Upper part of yoke has window embracing longer part of bolt with clearance. EFFECT: increased operational reliability of weapon and its easy adaptability to manufacture. 2 cl, 3 dwg