A concealable, single-shot grenade launcher, the BP-02 "Pup" offers explosive firepower while retaining portability. The Pup functions mainly as a grenade pistol, and strongly resembles a revolver. It fires 40 x 46 mm low velocity grenades with the same punch as the grenades of the M327 Grenade Launcher, but with a grossly reduced size and ammunition reserve. It appears in Killzone, and an enhanced version appears in the Killzone 3 multiplayer, called the StA-2 Battle Pistol .[1]