WWI emergency revolver by Colt firing .45 ACP via half-moon clips. Adopted when 1911 production could not meet demand. Rugged and reliable. Type: Revolver Action: Double-Action Caliber: .45 ACP Capacity: 6 Year introduced: 1917, USA Weight: 40 oz Overall length: 10.8" Status: Discontinued Military use: Yes Intended use: Military Sidearm