The 1911 XO from Sig Sauer is an all-business, full-sized, non-railed 1911 made for those that want a rugged shooting pistol. Outfitted with contrast sights and Ergo Grip XT extreme use grips, the 1911 XO features Sig's durable Nitron finish designed for rugged use. The all stainless steel frame and slide of the XO are machined to exacting tolerances and hand-fitted to insure reliability and performance. The frame features 25 line-per-inch checkering on the front strap and both the frame and slide are de-horned for comfortable full-sized carry. Like all Sig Sauer products the 1911 XO pistols contain only premium internal parts including a match-grade barrel, hammer/sear set, and trigger. For safety the 1911 XO features a beavertail grip safety with a speed bump, an extended thumb safety, a firing pin safety, and a hammer intercept notch.