Patent attributes
A pistol comprising a barrel having a combustion chamber and slide translatable between an advanced configuration closing the combustion chamber, and a retracted configuration opening the chamber and in both configurations is substantially parallel to a longitudinal axis. The slide has a locking seat and longitudinal grooving. A closing organ rotatable with respect to the axis between a first and a second angular position and an element drawing in rotation the closing organ and fixed to the fore-end. The closing organ has a locking relief and a cam taking the rotation from the at least one element drawing in rotation. In the advanced configuration, the closing organ is in the first angular position so the locking relief engages the locking seat and the barrel and slide constrain each other, in the retracted configuration the closing organ is in the second angular position wherein the locking relief disengages from the locking seat and slides along the grooving so the slide can retract with respect to the barrel.