Developed for clandestine operations in the soviet union during the 1980s, this pistol is very neat as it uses it’s own special 7.62x41 cartridge which features a self contained piston between the powder charge and the projectile, thus when fired all the gases and muzzle flash are contained inside the shell case as it is ejected, making it one of the quietest guns ever made even without a suppressor on the muzzle. It is in fact so quiet the loudest sound produced when firing it is from the action of the metal parts.
Exactly once it gets that quiet it doesn’t need to be literally silent. Who is gonna hear that and be like “That was a gun”. Even the sound of the round hitting the target is as loud as the pistol itself