The PB silenced pistol (Pistolét Besshúmnyy - "Silenced Pistol", GRAU Index 6П9) was designed with a two-part suppressor, the main suppressor and a section built into the barrel, which allows the weapon to be operated without problems even without the main suppressor attached, but operating the weapon this way will not mitigate the sound or muzzle flash. It was intended for army reconnaissance groups and USSR KGB personnel and introduced into service in 1967. Still operated nowadays by FSB special forces and internal troops of Ministry of Internal Affairs.
