The PB (Russian: Пистолет бесшумный, romanized: Pistolet besshumnyy, lit.

'Pistol Silent', English: Silent Pistol; GRAU index 6P9) is a Soviet integrally suppressed semi-automatic pistol developed and manufactured by the Izhevsk Mechanical Plant, based on the Makarov pistol; since the merger of the Izhevsk Mechanical Plant and the Izhevsk Machine-Building Plant to form the Kalashnikov Concern in 2013, the Kalashnikov Concern has continued to manufacture the PB.

The pistol may also be fired safely without the front section attached, which may be important in critical situations.

The detached suppressor is carried in a special compartment of the holster, which was designed especially for the PB.

Because the front part of the barrel is covered by the suppressor, the slide is very short, such that it does not allow placing a return spring into it.