Ruger's American Compact pistol has a pre-tensioned striker system that features a powerful striker spring for positive ignition without a heavier trigger pull. It has a rigid, one-piece, precision-machined, black nitrided, stainless steel chassis with integral frame rails and fire control housing. Its modular wrap-around grip system is for the adjustment of palm swell and trigger reach to fit a wide range of hand sizes. Ergonomic grip modules lock in solidly and do not loosen. The American Duty also features Novak LoMount Carry three-dot sights, ambidextrous slide stop and magazine release, Picatinny rail, and non-slip surfaces on its side and grip. Includes one 12rd and one 17rd with grip extension, small, medium and large grip modules. Type Pistol Grips Textured Wraparound Action dao Safety Integrated Trigger Series Compact Weight 28.7 oz Caliber 9mm Luger Capacity 17+1 Sight Style Contrast Weight Range 16.00 oz to 31.99 oz Barrel Length 3.55" Frame Material Polymer Slide Description Serrated Barrel Length Range 3.00" to 3.99" Sight Configuration 3-Dot Novak LoMount