LONGITUDINAL SLIDING BREECHBLOCK OF SMALL ARMS WITH A COLLET CLUTCH MECHANISM ON THE BARREL Russian patent published in 2022 - IPC F41A3/40 

FIELD: weaponry.

SUBSTANCE: longitudinally sliding bolt of small arms with a collet clutch mechanism on the barrel contains collet clutch lobes and a control element in the form of a sleeve, a firing pin, a striker spring, a bolt spring with a stop. Collet petals are located over the valve body and are framed by an inertial sleeve with a spacer spring and are fastened by an annular spring biased towards the front side of the valve. The petals have protrusions at both ends away from the axis of the shutter, between which a spacer spring and an inertial bushing are located in series in a row away from the end of the shutter. The sleeve has the ability to slide longitudinally along the collet lugs. On the inner side of the petals towards the axis of the shutter in their front part there are projections inward for engagement with the barrel, in the central part there are swing stops, and between them closer to the front part there are projections for fixing the petals on the shutter. On the surface of the shutter, matched elements for fixing the rocking stops and the projections for fixing the petals are made.

EFFECT: expansion of the arsenal of technical means.

5 cl, 9 dwg