WWII M1911A1 made by Union Switch & Signal (~55,000 units). Rarest of the major WWII 1911 contractors. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 7 Year introduced: 1943, USA Weight: 38.5 oz Overall length: 8.6" Status: Discontinued Military use: Yes Intended use: military, collector