. "The Bushmaster Arm Pistol was a 5.56\u00D745mm NATO firearm, categorizeable as either a long pistol or short rifle or submachine gun, produced the Gwinn Firearms Company, and later Bushmaster Firearms Inc.. The firearm was a new design, having a tipping-block bolt system combined with a gas system similar to the AK-47 rifle."@en . . . . "Bushmaster Arm Pistol"@en .