Umarex T4E TR50 Gen 2 Paintball Revolver Pistol .50 CaliberT4E TR50 Revolver Pistol Gen 2 The Umarex T4E TR50 Gen 2 paintball revolver pistol has enormous muzzle energy and an imposing appearance along with some great new features. The easy to load rotary magazine holds six . 50 caliber projectiles. Power is supplied by a 12 gram CO2 cartridge (not included) located in the grip. A light blow at the bottom suffices to pierce it. The textured frame surfaces give you a secure grip even in stress situations, and