The Springfield Armory Range Officer is a usa-made semi-automatic pistol chambered in .45 ACP, introduced in 2010. Primary use: self_defense, sport. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 8 Year introduced: 2010, USA Weight: 36 oz Overall length: 8.6" Status: Active Intended use: self_defense, sport