Machine-pistol for cartridges of different types

Claim 1

A machine pistol for cartridges of different types, comprising: a barrel having an axis, a cartridge chamber within said barrel for housing a cartridge in a firing position, a magazine for feeding cartridges to said cartridge chamber, a percussion pin for firing said cartridge, a breech block movable relative to the barrel for actuation of said percussion pin, a longitudinal portion of said breech block having a small radial clearance relative to a wall of said barrel and defining a semicylindrical chamber surrounding the barrel over a certain longitudinal length, said percussion pin being positioned in the wall of the barrel and radially movable relative to said barrel under the action of a portion of an actuator device movable with the breech block, the actuator device including a bell crank hinged on the breech block and movable in a plane passing through the axis of the barrel and a stop tooth, for causing the bell crank to pivot about its hinge, integral with the barrel, said stop tooth located on said barrel in such a position as to engage the bell crank at an end of a forward stroke of the breech block.