PBS-1 silencer

[2] The PBS-1 silencer, designed for use with the AKM to reduce the noise when firing, was introduced in the 1960s, and was used mostly by Spetsnaz forces and the KGB.

[3][4][5] They were used by the Spetsnaz in the Soviet–Afghan War in the 1980s, requiring the use of the AKM (modernized variant of the AK-47), because the newer AK-74 did not have a silencer available.

[6] Until a variant of the AK74, the AKS-74UB adapted for use with the PBS-4 suppressor (used in combination with subsonic 5.45×39mm Russian ammunition).

[7] It was designed for use in conjunction with subsonic rifle ammunition.

[citation needed] The rubber wipe requires replacement after 20–25 rounds.