SMALL ARMS Russian patent published in 2015 - IPC F41C7/00 

FIELD: weapons and ammunition.

SUBSTANCE: small arms have a barrel, a barrel receiver, a cover plate with a back-plate and a Picatinny rail, a bolt carrier with a bolt, a trigger and firing mechanism, a retracting mechanism, and a gas fitting with a gas tube and a piston. The Picatinny rail is installed on the cover plate of the barrel receiver. The front shoe and the rear shoe, in which the gas fitting is located, are installed on the barrel. In the upper part of the shoes there are shaped projections of a dovetail type for interaction with the Picatinny rail. The cover plate of the barrel receiver includes a bracket, to which a fastener to be fixed to the barrel receiver is installed. The Picatinny rail is provided with a longitudinal slot located in the central part of the rail. The retracting mechanism is fixed in the rear part of the cover plate of the barrel receiver. A gas tube fastener is installed in the shoe.

EFFECT: improving reliability of attachment of a cover plate to a barrel receiver and enlarging functional capabilities of small arms.

6 cl, 6 dwg