The Umarex Hammer PCP Air Rifle didn't alter the laws of physics. Umarex just took advantage of them. The Umarex Hammer's primary objective was to accelerate a greater mass faster using technology, ingenuity, and that big .50 caliber barrel. This unparalleled air rifle will push a 550 grain slug to 760 FPS and generate 705 ft-lbs of energy at the muzzle. Unlike a traditional firearm, the Hammer doesn't generate a comparable report or recoil signature. A shooter in a hunting situation will not need to wear hearing protection when shooting the Hammer. The recoil of this big bore rifle can best be described as a firm push, not a sharp kick like a rifle would give. Its dual-chamber precision magazine means you'll have an immediate follow-up shot if needed and each Umarex Hammer comes with two magazines. The Umarex Hammer is not just another air rifle. It's in a class all by itself.FeaturesThe rifle that generates big game power without powder.50 caliber big game ...