FIELD: firearm, in particular, hand automatic arms. SUBSTANCE: according to the first modification, the pistol recoil mechanism is provided with a flexible kinematic linkage of the movable parts, the recoil spring is positioned in the grip before the magazine, the firing mechanism is a double-action cam mechanism, the pistol is provided with a trigger no-load elimination mechanism, hammer release force adjusting mechanism and an automatic safety catch. According to the second modification, the pistol is featured by the fact that the firing mechanism is a double-action cam mechanism for control of the single and continuous fire through the trigger. In the pistol of the third modification the firing mechanism is made with a side hammer and a firing pin with a side plug for provision of two modes of fire, provision is made for a control mechanism of the single and continues modes of fire through the trigger. According to the fourth modification, the pistol is featured by the fact that in the double-action cam firing mechanism having a side hammer and a firing pin with a side plug the latter passes through a through slot in the wall of the slide, and the pistol has a firing mode control mechanism by means of the trigger, the trigger no-load elimination mechanism, hammer release force adjusting mechanism and an automatic safety catch. Besides, the recoil spring of the recoil mechanism located in the pistol grip is kinematically linked with the slide by a flexible link thrown over a pulley, and the recoil spring located in the slide is positioned between the inner circular shoulder and the rear part of the weapon body. The specific feature of the cam firing mechanism is the nature of interaction of its parts with the firing plunger depending on the degree of pressure on the trigger. The pistol has a detachable unit for attachment of a spare magazine to the barrel as an additional grip. EFFECT: improved ballistic and technical characteristics of the weapon, reduced its weight as compared with the weapon of a similar type, and enhanced safety of use. 50 cl, 9 dwg
