FIELD: small arms, applicable in attack and field submachine guns, as well as in machine guns with a belt feed of cartridges.
SUBSTANCE: three modifications of small arms are offered. The first modification is featured by the fact that the weapon represents an attack submachine gun provided with a mechanism for a smooth strikeless release of the hammer, mechanism for a delay of the breechblock in the rear position at an empty magazine, handle-fore-grip, butt strap, the locking device is of the friction-wedge type, and the firing mechanism is of the cam double-action type with two regimes of firing with a side hammer. The second modification represents a field submachine gun provided with a mechanism for a delay of the breechblock in the rear position at an empty magazine with a breechblock stop indicator, handle-fore-grip with a retractable leg, reaction-acoustic compensator, the firing mechanism is of the striking type with two regimes of firing, it is positioned inside the breechblock and inside the return spring, and the locking device is of the friction-wedge type. According to the third modification, the small arms represent a machine gun provided with an automatic safety device actuated at a release of the fighting grip of the weapon, reaction-acoustic compensator, balancer-compensator of impact loads, mechanism for feed of cartridges from the cartridge belt to the ramming line from the bottom according to the principle of magazine systems, rod deflector of cartridge cases, mechanism for a delay of the moment of breechblock unlocking, and the trigger device of the striking type firing mechanism is made for control of the regimes of firing by the trigger. The friction-wedge locking device with the unlocking mechanism is featured by the fact that the return spring is positioned inside the breechblock and has a front stop made in the form of movable bush with side lugs passing through the slots in the breechblock wall. The cam-type double-action firing mechanism is made for accomplishment of two firing modes. The specific feature of this firing mechanism is the fact that the hammer has a spear-shaped end-piece with an annular spear-shaped shoulder, and the entire device is positioned inside the breechblock and return spring. The reaction-acoustic compensator is made with a gas dynamic or with a mechanic-dynamic control of the gas flows. In the method for simultaneous release of the weapon recoil force and decrease of the level of the acoustic component at a shot use is made of a reaction-acoustic compensator, the prebullet and pastbullet flows of powder gases are directed to the axial nozzle chambers, and then to the nozzles with a thrust vector reducing the weapon recoil force, and withdrawn to the environment through the frequency-converting gratings.
EFFECT: enhanced universality of the small arms, its reliability, enhanced operating characteristics of the weapon.
89 cl, 16 dwg
