All that protects against accidental firing is the blocking of the firing pin during the forward stroke, in case the trigger is not pressed and the force of pressing the trigger itself. There are no external signs of the presence of at least some elements that protect against an accidental shot, which is not far from the truth. The trigger mechanism of the pistol pistol with dovzvodom when you press the trigger. Locking the barrel is due to the coupling of the protrusion above the breech and the window for ejection of spent cartridges. The automation system is built around the use of recoil energy in the short course of the barrel.
There are no revolutionary decisions in the design of the pistol, one can even say that it is the next of many pistols of the same type.