Colt's largest and heaviest double-action revolver, designed to handle the most powerful revolver cartridges. Adopted as the US Army Model 1909 in .45 Colt to supplement the .38 Long Colt (which proved inadequate in the Philippines). Also adopted by RCMP, British forces in .455 Webley, and numerous police departments. The S&W Model 1917 and Colt New Service were the two primary US military revolvers of WWI alongside the 1911. Type: Revolver Action: Revolver Caliber: .45 Colt Capacity: 6 Year introduced: 1898, USA Weight: 37 oz Overall length: 9.5" Status: Discontinued Military use: Yes Intended use: military, law enforcement