https://youtu.be/6RDS92zBv6k The PSS is a semiautomatic pistol using captive piston ammunition to achieve a comparable level of sound suppression to a .22 pistol with a good normal suppressor. It was developed to replace a couple multi-barrel derringer style captive piston pistols in Soviet use, with the semiautomatic action and (6-round) detachable magazines making it suitable