The SIG 1911 STX was SIG Sauer's full-featured production 1911 with a stainless steel frame and slide, Novak-style sights, front and rear serrations, and a match-grade barrel. Built to compete with Kimber and Colt at the premium end of the market. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 8 Year introduced: 2004, Germany/USA Weight: 41 oz Overall length: 8.5" Status: Discontinued Intended use: Range, Collection, Service