Firearm with superposed barrels - has three piece lock comprising bolt key, intermediate piece and U=shaped bolt

摘要

The superposed barrels are articulated to the rocker by a hinge. The U-bolt arms are guided in the rocker and cooperate with bore holes in the barrel, while the U-bolt core cooperates with the bolt translator. The two tenons of the bolt are guided in the rocker, and the bolt intermediate piece cooperates with the tenons and with the bolt key. Each tenon has a notch to take the ends of the intermediate piece.