The 1911 Revolution XO Stainless from Sig Sauer is an all-business, full-sized, non-railed 1911 made for those that want a rugged shooting pistol. Outfitted with Novak-style 3-dot sights and checkered synthetic grips, the Revolution XO-S is designed for rugged use. The all stainless steel frame and slide of the XO-S are machined to exacting tolerances and hand-fitted to insure reliability and performance. The mainspring housing is rounded and serrated and the hammer is skeletonized. Like all Sig products, the Revolution XO-S contains only premium internal parts, including a match grade barrel, a hammer/sear set, and trigger. For safety, the Revolution XO-S features a beavertail grip safety with a speed bump, an extended thumb safety, a firing pin safety, and a hammer intercept notch. This handgun comes with three 8-round magazines, four 10-round extended magazines, and the original factory hard case. Its grips, metal, and bore are all in very good condition.