Introducing the Umarex Prymex .177 Caliber Air Rifle -- an affordable break barrel air rifle that has everything you need for plinking, pest control, or small game hunting. In .177 caliber standard lead airgun pellets achieve a velocity of 1,000 feet per second. The single-stroke gas piston break barrel design ensures smooth and reliable operation, while the 11mm dovetail scope mount allows for easy customization with the included 4x32 scope.