Pistol with firing mechanism that can easily be adapted to various modes of operation

A pistol firing device easily adaptable to different modes of operation, comprising a frame on top of which a bolt slides, said frame comprising a handle, which houses a magazine, a trigger guard involving a trigger and a metal back support for housing some of the components of the pistol firing device, wherein said firing device comprises said trigger pivotly mounted to a first end of a rod, wherein an end of the rod opposed to the first end is located on the back support, said bolt involves and houses a firing pin located on a rear side and aligned to a chamber wherein a cartridge is located, and said firing pin has around its front portion a firing pin spring which acts on a stop, and on a rear portion of the firing pin a finger projects downwards, said pistol firing device further comprising:

• said rod in the shape of a laminar element and including, on said opposed end to the trigger, a tip and a crosswise arm, wherein said crosswise arm is projected from a longitudinal body of the rod, towards a central portion of the pistol firing device and has a front surface, able to mechanically interact with said finger and a flap facing the crosswise arm and projecting downwards, said flap comprising a central portion with an oblong hole;
• a rod guiding pin fixed to the back support and with the guiding pin's crosswise axle parallel to a length of the pistol firing device, wherein said rod guiding pin crosses the oblong hole of the flap of the crosswise arm, so as to limit the upward and downward movement of said crosswise arm;
• and a rod ramp in the form of an elongated laminar body, fixed to a lower end of a crosswise axle and, on an opposite upper end, having a fold projecting away from a center of the pistol firing device, thus defining a contact surface that mechanically works against the tip of the rod.