FIRE WEAPON WITH QUICK BARREL CHANGING Russian patent published in 2017 - IPC F41A21/48 F41A3/26 

FIELD: weapon and ammunition.

SUBSTANCE: fire weapon comprises a frame located in the receiver and having a groove formed therein, a barrel having a barrel clutch and a swinging wedge configured to engage a transverse pin on the barrel to pull the barrel upward into a pair of V-shaped blocks on the frame and to attract the barrel clutch flange upwards, into the recess in the frame, to align the barrel and block the forward and backward movement of the barrel clutch relative to the core.

EFFECT: fire weapon can provide a quick barrel change.

31 cl, 1 tbl, 283 dwg