The 9x19mm sidearm, otherwise as the KeepThemDown its a pistol that can be only carry by Ghosts and rarely sometimes Bosses and uses the most common and weak gauge 9x19mm.
Info: The KeepThemDown was generally the most accurate and used weapon, haves a short magazine (7 mag clip) and a suppresor that makes the gun suppresed, making it their shots more direct where they do hit, semiautomatic pistol.