Colt Defense O1911C: The Colt Government is a direct 3rd and 4th generation descendants of the \"often imitated but never duplicated\" Colt M1911 classic automatic pistol. It was selected as the U.S. military service sidearm in a head to head competition. The superior Colt was found to be, more reliable, more durable, more easily disassembled, less fatiguing and more accurate. The O1991 model features a Series 70 firing system.