Buy the Sig Sauer 1911 Traditional Reverse Two-Tone from the P.B.Dionisio & Co., Inc. Guns and Ammo Store. Features the recognizable “round-top” 1911 slide profile, front cocking serrations and a lightweight, three-hole trigger. Standard on all models are a match-grade barrel, flat mainspring housing and speed bump grip safety. Front straps have 25LPI checking and the mainspring housing has 20LPI for optimum grip and user comfort.