The Rock Standard full size Pistol built in traditional classic Series 70 design and delivered with their 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 allow for quick draw in fast need situation. Includes skeletonize Hammer, Beavertail Grip Safety and Ambidextrous Safety Lock which is standard in the Rock Series. Grips is a double diamond checkered wood. Rock Island Amory Pistol, comes with crisp factory 4-6 pound trigger pull. Making it a great experience right out of the box.Features :Precise Manufacturing"45 ACP, 5" Barrel"4-6 LB Trigger Pull4140 Steel ConstructionLong Term Reliability