The Rock Standard compact size pistol is built in traditional 70-series design and delivered with RIA's top quality production and engineering standards. This pistol is chambered in 45 ACP with a 3.50” button rifled barrel supported by a full length guide rod. Smooth-angled snag-free style allows for quick draw in fast need situations. Includes a low profile angled rear sight along with skeletonized hammer and trigger with adjustable over travel stop and ambidextrous safety. The Rock Standard is finished with a tough parkerzied matte coating and comes with checkered rubber grips. True to all Rock Island 1911s the Rock Standard comes with a crisp factory 4- to 6-pound trigger to give you a great experience right out of the box.