The Rock Island Armory standard full size pistol built on traditional classic Series 70 design and delivered with top quality production and engineering standard. Chambered in .45 ACP with 5" button rifled Barrel. The slide has a double wide slant serration with traditional roll over ejection port. Slide and frame are stainless steel 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 allows for quick draw in fast need situations. Includes skeletonized hammer, beavertail grip saftey and ambidextrous saftey. Grips are double diamond cheeckered wood. Comes with crisp factory 4- to 6- pound trigger pull.