The ArmaLite AR-50 is an innovative, single shot bolt actionrifle bearing a unique octagonal receiver bedded into an aluminum stock. It is equipped with a modified M16 type vertical pistol grip and a removable buttstock for ease of transport. The AR-50 uses the .50 BMGammunition used by the U.S. military's M2 machine gun. The gun's overall length is 59.5 inches (151 cm) and weighs roughly 34 pounds (15.5 kg). It is used as an Anti-material rifle. A bolt-action firearm is one that is manually operated (i. ... A rifle is any long gun which has a rifled barrel. ... An M16A2 rifle M16 is the US Military designation for the Armalite AR-15, an assault rifle which fires NATO standard 5. ... A pistol or handgun is a usually small, projectile weapon, normally fired with one hand. ... Categories: Stub | Pistol and rifle cartridges ... Boxes of ammunition clog a warehouse in Baghdad Ammunition is a generic military term meaning (the assembly of) a projectile and its propellant. ... The armed forces of the United States of America consist of the United States Army United States Navy United States Air Force United States Marine Corps United States Coast Guard Note: The United States Coast Guard has both military and law enforcement functions. ... An M2 machine gun surrounded by spent shell casings The M2 . ... An anti-material rifle is generally a large-caliber rifle used in peacetime for destroying unexploded ordnance, and during wartime for attacking unarmored or lightly armored targets, fuel dumps, parked airplanes, etc. ...