Delivering three .50 cal. rounds one after the next, the Hammer uses the patent-pending Light speed Valve designed to provide consistent 3,000 psi of pressure behind each shot driven by its huge 4,500psi cylinder. This innovative system was built to sling a .50 caliber 550-grain lead slug at 760 feet per second and a 250-grain slug at over 1,000 feet per second. These factors add up to a big bore that can fire 2 fully-powered consistent shots, plus one more follow-up up shot.