The Rock Standard compact size pistol built in traditional classic Series 70 design and delivered with our top quality production and engineering standard. Chambered in .45 ACP with 3.63 button rifled barrel. The slide has a rear Slant Serration and with traditional Roll Over Ejection Port. Slide and frame are Stainless and all exposed parts are matted 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 skeletonize Hammer Beavertail Grip Saftey and Conventional Safety Lock. Grips is a double diamond checkered wood. Rock Island Armory Pistol comes with crisp factory 4- to 6-pound trigger pull. Making it a great experience right out of the box. – Caliber: 45 ACP – Capacity: 7 Rounds – Front Sight: Fixed mounted on dovetail cut – Rear Sight: Fixed mounted on dovetail cut – Weight Unloaded: 0.92kgs/ 2lbs – Overall Length: 187mm (7 3/8) – Overall Width: 33mm (1 5/16) – Overall Height: 130mm (5 1/8) – Barrel Length: 92mm (3 5/8) – Trigger Pull: 1.81-2.72kg (4-6lbs) – Action: Semi-Auto Recoil Operated – Number of grooves: 6 – Length of Twist: Right Hand 1 Turn in 400mm – Stock: Wood grip (Double diamond Checkered) – Frame Finish: Matte Stainless – Slide Finish: Matte Stainless