The TAC Ultra FS introduces a full tactical rail and is built with 4140 Ordinance steel and refined with our carefully managed hand fitting process. It's chambered in 10mm with a 5" button rifled barrel supported by a full length guide rod and full dust cover. It includes a low profile adjustable rear sight and high visibility fiber optic front sight and is also fitted with a skeletonized hammer and trigger with adjustable over travel stop. The TAC Ultra is finished with a tough parkerzied matte coating and adds battle ready G10 tactical grips. Like all Rock Island 1911s, the Tac Ultra comes with a crisp factory 4- to 6-pound trigger to give you a great experience right out of the box.