LIGHT MACHINE GUN Russian patent published in 2003 - IPC

FIELD: small arms, in particular, the highest power automatic weapon used for armament of a rifle squad. SUBSTANCE: light machine gun has a receiver with an insert, hand guard with a gas tube, barrel with a chamber positioned in the hand guard insert, sight bed and a gas chamber connected by the gas tube, as well as a trigger mechanism mounted on a pin inside the receiver, rotary breechblock with a hammer positioned for engagement with the slide block of the receiver insert in the breechblock carrier, provided with a return mechanism, having a guide and a spring-loaded rod, whose end rests on the rod end fastened in a hole of the breechblock carrier, the opposite end of the rod is positioned in the gas chamber, made in pairs on the barrel surface are oppositely directed recesses for fastening of the sight bed and the gas chamber, whose walls have oppositely directed flanges on the inner surfaces introduced in the barrel recesses, and the transition of the cartridge chamber to the rifled bore is conjugate to the latter by three tapered sections and a section with a curved generatrix, the receiver on the side of arrangement of the insert is made with stepped side walls. EFFECT: enhanced reliability and durability of the machine gun. 7 cl, 17 dwg