WWI emergency revolver by Smith & Wesson, firing .45 ACP via half-moon clips. N-frame construction. The S&W version uses a different hand ejector mechanism than the Colt. Type: Revolver Action: Double-Action Caliber: .45 ACP Capacity: 6 Year introduced: 1917, USA Weight: 36.5 oz Overall length: 10.8" Status: Discontinued Military use: Yes Intended use: Military Sidearm