The TAC Ultra CS, like all Rock Island 1911s, is built with 4140 ordnance steel and is refined with our hand fitting process. Its 3.7″ button rifled barrel is chambered in 45 ACP, is equipped with a full length guide rod, full dust cover and accessory rail. It also includes a low profile adjustable rear sight, fiber optic front sight, is fitted with a lightweight hammer and MR3 trigger with overtravel adjustment. The TAC Ultra wears a tough parkerized, matte finished and adds the rugged G10 grips for years of dependable use. True to all Rock Island 1911s, the TAC Ultra CS comes with a crisp 4 to 6 pound trigger pull, giving you great out-of-the-box performance.