With a design based on feedback from law enforcement military trainers firearms experts and retailers the Ruger American is a full-sized semi-automatic striker-fired handgun featuring a revolutionary platform along with a recoil-reducing barrel cam low mass slide low center of gravity and a low bore axis. Available in both 9mm and 45 ACP the chassis and slide are machined from black-nitride stainless steel and include functional slide serrations and purpose-oriented grip frame texturing for better control. Safety features include an internal automatic sear block system and integrated trigger safety. An inspection port provides visual confirmation of a loaded or empty chamber while the tool-free disassembly and reassembly make for easy maintenance of the American. Details Caliber 9mm Luger - Capacity 171 - Slide Material Stainless Steel - Barrel Length 4.20 - Grip Frame One-Piece High-Performance Glass-Filled Nylon - Grips Ergonomic Wrap-Around Grip Module - Slide Finish Black Nitride - Width 1.40 - Sights Novak LoMount Carry 3-Dot - Weight 30 oz. - Overall Length 7.50 - Height 5.60 - Grooves 6 - Twist 110 RH - Trigger features a short takeup with positive reset. - Recoil-reducing barrel cam low-mass slide low center of gravity and low bore axis. - Performance tested for sustained P ammunition use. - Genuine Novak LoMount Carry three-dot sights. - Modular wrap-around grip system for adjusting palm swell and trigger reach. - Safe easy takedown with no tools or trigger pull required. - Ambidextrous slide stop and magazine release allow actuation with either hand. - Safety features include internal automatic sear block system integrated trigger safety and no trigger pull required for takedown. - Also includes Two nickel-Teflon plated steel magazines small medium and large grip modules