The Rock Standard full-size is built in traditional classic 70 series design and delivered with our top quality production and engineering standards. It's chambered in .45ACP with a 5O button rifled barrel supported by a full-length guide rod. The smooth, angled, snag-free style allows for a quick draw in fast-need situations. It includes a low profile angled rear sight, a skeletonized hammer and trigger with an adjustable over-travel stop and an ambidextrous safety standard in the Rock series. Finished with a tough, parkerized matte coating and comes with checkered rubber grips. True to all Rock Island 1911s, it comes with a crisp factory 4- to 6-pound trigger, making it a great experience right out of the box.