The Springfield Armory Operator 1911 .45 ACP is a rail-equipped tactical 1911 with Picatinny accessory rail, adjustable night sights, and Operator-series controls. Bridges the classic 1911 with modern tactical accessories for duty and competition use. Type: Semi-Auto Pistol Action: SA Caliber: .45 ACP Capacity: 8 Year introduced: 2003, USA Weight: 40.5 oz Overall length: 8.6" Status: Active Intended use: Competition, Tactical, Defense