Caliber: 5.7x28mm - Capacity: 20+1 - Grip Frame: High-Performance Glass-Filled Nylon - Barrel Length: 4.94 - Overall Length: 8.65 - Barrel Material: Alloy Steel - Barrel Finish: Black Nitride - Front Sight: Fiber Optic - Rear Sight: Adjustable - Slide Material: Alloy Steel - Slide Finish: Black Oxide - Weight: 24.5 oz. - Slide Width: 1.20 - Height: 5.60 - Grooves: 8 - Twist: 1:9 RH - Impressive ergonomics include an easy trigger reach robust slide release and reversible magazine release latch. - Through hardened billet steel slide with lightening cuts is drilled and tapped for easy mounting of optics with separately available optic adapter plate. - Windage and elevation adjustable serrated rear sight and rapid acquisition fiber optic front sight for fast accurate shooting. - The alloy steel barrel features a black nitride treatment for wear resistance. - Steel magazine provides double stack capacity without unnecessary bulk. - Textured ergonomic frame provides a secure and comfortable grip. - Utilizes Ruger's safe reliable and proven Secure Action fire-control system that combines a protected internal hammer with a bladed-safety trigger. The trigger has a short smooth pull clean break and positive reset. - Safe easy takedown with no tools or trigger pull required. - Inspection port allows for visual confirmation of a loaded or empty chamber. - Picatinny-style accessory rail for easy mounting of lights and lasers. - Safety features include: Integrated trigger safety; light-weight firing pin; neutrally balanced sear with significant engagement and strong spring tension; and hammer catch to help prevent the hammer from contacting the firing pin unless the trigger is pulled. - Magazine drops free on release for convenient reloading. - Also includes: two steel magazines.