The Rock Standard full size pistol built in traditional classic Series 70 design and delivered with our top quality production and engineering standard, chambered in .45 ACP with 5" button rifled Barrel. The Slide has a double wide slant serration and with traditional roll over ejection port. Slide and frame are stainless and all exposed parts are matte chrome SAE 4140 high grade steel. Front/rear sight and internal parts are parkerized finish. Smooth, angled, snag free low profile rear sight allow for quick draw in fast need situation. Includes skeletonized hammer, beavertail grip safety and ambidextrous safety lock which is standard in the Rock Series. Grips is a double diamond checkered wood. Rock Island Armory Pistol, comes with crisp factory 4- to 6 pound trigger pull.