FIELD: weaponry, applicable in weapon systems combining a submachine gun and a subbarrel grenade launcher.;SUBSTANCE: the submachine gun barrel is installed in the hole of the rear post made in the form of a plate attached to the front part of the receiver. Fastened on the side of the receiver on a thread is the breech end of the submachine gun, the lateral sides of the post and the lower side are bent aside forward. The fore end with the pistol handle and the trigger bow are box-shaped. The rear wall of the fore end is installed with a rest in the plane of the rear post and a groove open from the top is made in it, a through cross-sectional hole is made in the side walls of the fore end under the outer surface of the barrel, a cotter pin with a lock is installed in this hole. The front post is installed for axial motion at the front wall of the fore end on the lower part of the foresight bracket.;EFFECT: preserved characteristics of closely grouped fire within the preset norms during the whole service life.;2 cl, 3 dwg
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