Caliber: 5.7x28mm – Capacity: 10+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 – This model ships with a 10-round magazine for consumers in those states which limit magazine capacity. – Impressive ergonomics include an easy trigger reach 1911-style ambidextrous manual safety 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 available at ShopRuger.com. – 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. – The Secure Action™ fire control combines Ruger’s reliable and proven internal hammer with a short crisp trigger pull and a 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. – Magazine drops free on release for convenient reloading. – Also includes: two steel magazines.