The lightweight Ruger SR1911 in 45 ACP gives you the feel and accuracy of a full-sized SR1911. Its aluminum frame makes the pistol nearly a 1/2 pound lighter (7.9 oz) than the classic stainless steel frame SR1911 pistols Features a lightweight aluminum frame and polished titanium feed ramp. Precision CNC-controlled machining process results in a superior slide-to-frame fit and smooth slide travel. Barrel lock-up allows for accuracy. Traditional design with replaceable grip panels and checkered backstrap. Lightweight, aluminum, skeletonized trigger, skeletonized hammer and titanium firing pin. Oversized ejection port and extended magazine release enhance performance. Inspection port allows for visual confirmation of a loaded or empty chamber. Accepts most standard, aftermarket 1911 parts and accessories. Includes two magazine and bushing wrench.