SYSTEM FOR AUTOMATIC OPENING OF GUN BREECH LOCK Russian patent published in 2008 - IPC F41A5/00 

FIELD: weapons, gun breech lock automatic opening systems.

SUBSTANCE: system incorporates a barrel, a butt, a breech lock, a spring-loaded return mechanism to return the barrel and the breech lock to initial position. The system is furnished with a split joint with a spring-loaded return mechanism arranged on the upper longitudinal cover enclosing the guide butt space. The gun features a "bullpup" configuration allowing a fixed volleys thanks to interaction of the driven ledge of the breech lock fire elevator and skewed sections spaced along the recoil line of the leading shaped slot facing the gun barrel side. The said system is furnished with a vertical slot or groove arranged on the side wall of the open barrel case that can enter the said vertical slot. The shaped driven ledge can move lengthwise along the barrel case wall.

EFFECT: updated system of the breech lock automatic opening.

2 cl, 3 dwg