Double-action revolver chambered in .45 ACP using half-moon clips. Adopted alongside the S&W Model 1917 when M1911 production could not meet WWI demand. Used through WWII. Type: Revolver Action: Single-Action Caliber: .45 ACP Capacity: 6 Year introduced: 1917, USA Weight: 40 oz Overall length: 10" Status: Discontinued Military use: Yes Intended use: military