A suppressor designed for use on 9mm Pistols. When fitted, the suppressor will drastically reduce the amount of noise the weapon makes when fired. Zombies Won't react to the weapon being fired at all if Subsonic (SD) Ammunition is used, and players will only be able to hear the weapon from ~20m away.
However, unless Subsonic ammunition (Such as the M9SD Mag) is used, Zeds will still hear the shot and attack the player who fired the weapon. Subsonic ammunition is less accurate and less powerful than full-powered rounds, and thus are not ideal for PvP Activity.