METHOD FOR ATTACHMENT OF BARREL TO SMALL ARMS RECEIVER Russian patent published in 2003 - IPC

FIELD: small arms, applicable in manufacture and assembly of weapon with a longitudinally sliding breechblock. SUBSTANCE: the method consists in the fact that a thread is cut on the end-piece of the barrel breech, on which then the receiver is screwed on, prior to it selected and installed between the receiver end and the barrel thickening is a ring, whose length satisfies the following condition: h+l_b-l_z≤L<h+S+l_b-l_z, where h - the distance between the barrel thickening and the end of the caliber-gauge, l_b - the distance between the locking lugs of the breechblock and the breechblock face, l_z - the distance between the receiver end and the receiver locking recesses, S - the maximum-allowable face clearance, L-ring length. EFFECT: enhanced adaptability to manufacture as compared with the prototype due to simplification and labor content of fulfilled operations. 4 cl, 1 dwg, 1 ex