Russian invisible PSS mute pistol: In order to meet the needs of KGB agents and Soviet special forces for mute pistols, the Soviet Central Institute of Precision Engineering began to develop a new mute pistol in 1979, and the project code was "Wool". In 1983, PSS mute pistol was officially adopted. This pistol achieved the purpose of silencing and extinguishing flames by preventing gunpowder gas from flowing out. The Soviet Union made bold practice in this field at the end of last century.

This gun was specially developed for KGB agents and military special forces in the former Soviet Union. Its biggest feature is that it is very quiet when fired, and it does not use silencers. KGB, the Soviet National Security Council, is a secret organization to defend the national security of the Soviet Union. Since its birth, it has been cloaked in mystery and blood, and is famous for its decisive actions and diversified means. Russian President Vladimir Putin, who is familiar to Chinese people, is a former KGB senior colonel, equivalent to the western brigadier general level.

KGB personnel always carry some silencing weapons when performing their tasks. Think about this pistol that Putin used in the past. The bullet used in PSS micro-sound pistol is called 7.62× 41msp-4 bullet, and 41mm indicates the length of the shell. The propellant of this kind of bullet is located under the light metal piston, and the tip in the center of the piston is inserted into the bottom of the warhead to position the warhead. The warhead is made of steel with a brass guide at its front end. The cartridge case is made of copper-plated steel plate. The primer is installed in the bottom socket of the projectile to ensure that it will not be ejected under the pressure of gunpowder gas.

silencers are mostly used. There are two common mufflers: one is installed at the muzzle, and the other is integrated with the barrel. In the first muffler, the principle of noise elimination is that the gunpowder gas in the bore flows out of the muzzle and then decelerates step by step through the hole of the muffler, thus greatly reducing the muzzle noise. Because there is a certain error in the coaxiality between the hole of the muffler and the barrel bore, the bullet is affected when it passes through the hole of the muffler from the barrel, thus affecting the firing accuracy to some extent.

in the second muffler, the front of the barrel is provided with a transverse exhaust hole and the outside is a sleeve. The sleeve forms an expansion chamber, and the propellant gas flows into the expansion chamber through the transverse exhaust hole. This kind of integral silencer is beneficial to ensure the shooting accuracy of weapons. Agents in many countries are equipped with micro-sound pistols, and the common micro-sound pistols are equipped with silencers in front of the barrel. However, the Russian PSS7.62mm micro-sound pistol has a new way, using a silencer that is different from the common silencer structure.

PSS pistol adopts the principle of free bolt, with double-acting trigger and exposed hammer. There is a simple fixed mechanical sight on the gun. The magazine is supplied with detachable single-row magazine, and the magazine capacity is 6 rounds. Compared with MSP and S-4M, which can only hold two rounds, PSS is more powerful, and compared with makarov PB, which is equipped with an integral muffler, PSS has the advantages of more compact size and the best noise elimination effect. At present, PSS is equipped with Russian anti-terrorism special forces.