PSS silenced pistol (official index 6P28, code name during development of the "Wool") I created in TSNIITOCHMASH designers VN Levchenko and Krylov YM. chambered 7,62 mm SP-4 development Petrova VA.

Adopted by the KGB and military intelligence personnel in 1983 year.

Compared to existing samples silent weapon, PSS distinguish small size, making it convenient for concealed carry. Such a small length for silent weapon achieved using special cartridges SP-4 cutoff propellant gases within the sleeve. The use of special cartridges allowed to abandon the bulky and heavy silencer, commonly used weapon in the silent. Compared with previous models of weapons under the noiseless special ammunition (WSR, C-4M), MSS gun provides a much higher rate by using a self-loading mechanism with a detachable magazine for six rounds.

Due to the unusual design of the pistol used cartridges also quite unusual. The gun uses automatic circuit blowback, wherein the shutter return spring is arranged within the shutter above the barrel, on the guide rod. gun barrel consists of two parts, movable in the longitudinal plane of the chamber and the stationary threaded portion. The chamber has the ability to roll back around 8 millimeters, and has its own return spring, beneath him. At the time of the shot, when a bullet comes out of the sleeve and begins to cut into the front of the barrel rifling, powder gas pressure, trapped in the pocket between pushing the bullet tray liners and the Donets, starts to push the sleeve with the retaining its chambered ago. With them begins to move and slide. After rolling back the chamber to eight millimeters, he stops, resting in the arms frame, a prison, moving by inertia, It extracts the spent case and throws it. At this time the chamber under the action of its return spring returns to the front position. At the end of the bolt rollback "picks up" the special protrusion on its inner surface chamber, and thanks to its extra weight, and the spring force of the return chamber is a smooth shockless shutter inhibition, further reduces sound automatic operation (metallic clank parts). Another nice feature of this design is, that due to depressurization of the barrel for the bullet in the barrel for the bullet does not create a low pressure (the sleeve not leave powder gases). Otherwise, for the created underpressure bullet would provide additional noise (cotton) breaking into the atmospheric air at the time of departure barrel bullets.

Shock trigger mechanism of the gun CAP as a whole is borrowed from a Makarov pistol, detachable box magazine holds six bullets. The design includes gate delay, providing gate hold a rearward position after discharging all rounds.

After the shot sleeve for some time remain dangerous due to the high residual pressure in the sleeve, order 1 000 kg / cm2.

pistol design is protected by RF patent, whereas the detailed arrangement, and most importantly - the technological processes of manufacture of the cartridge SP-4 were not disclosed. Issue MSS "Wool" is adjusted at the Tula arms factory.

Disassembly-assembly of the self-loading pistol special CAP:

to clean, grease gun, as well as removal of small faults made him partially disassembled. To do this,:

1. Remove the magazine. Hold the handle of the gun, drown the magazine cover, withdraw the latch back to the full, while pulling the protruding part of the store cover from the handle. eject.

2. Remove gun with a fuse, relegating the bolt in its rearmost position, check, whether there is no cartridge in the chamber. shutter release, make controlling the descent hammers.

3. separate gate. Pull the release lever in the muzzle of the forward and, povernuv of 90º, release him. Lifting up the front end of the shutter, take the bolt to its rearmost position and separate it from the frame.

the gun assembly after partial disassembly in the reverse order. The gun used grease service rifle RJ OST 38.01439-88. To avoid delays when shooting is strictly forbidden to lubricate the inner surface of the chamber the pistol and ammunition.

Caliber 7,62 mm

Patron SP-4

The length of the cartridge 42 mm

cartridge Weight 24 g

bullet weight 10 g

Empty weight 0,7 kg

Length 165 mm

barrel length 35 mm

number of grooves 6

Height 140 mm

Width 30 mm

Muzzle velocity 200 m / s

muzzle energy 190 J.

combat rate 24 / m

magazine capacity 6 rounds

Sighting range 50 m

at a distance 20 m bullet pierces Army basinet

Spetsnaza.Pistolet special self-loading weapons(PSS)

PSS silenced pistol ELL – self-loading pistol special