The Model 1917 was produced during WWI to supplement 1911 semi-automatic pistol production — the Army needed .45 ACP sidearms faster than 1911s could be made. Using half-moon clips to feed the rimless .45 ACP cartridge, it armed hundreds of thousands of American soldiers. Type: Revolver Action: Double-Action Caliber: 45 ACP Capacity: 6 Year introduced: 1917, USA Weight: 36 oz Overall length: 10.8" Status: Discontinued Military use: Yes Intended use: Military Service