Interchangeable magazine wells for use of common Ruger and Glock magazines; Reversible magazine release and reversible charging handle to support ambidextrous use or one-handed control manipulation while maintaining a proper firing grip; Cold hammer-forged, chrome-moly steel barrel with ultra-precise rifling provides exceptional accuracy, longevity and easy cleaning; 1/2"-28 threaded barrel with included thread protector allows for use of standard muzzle accessories; Accurate sighting system with adjustable ghost ring rear aperture sight and non-glare, protected blade front sight; Soft rubber buttpad with spacers allows the rifle to be properly sized for different shooters or varying levels of outerwear or defensive gear (three, 1/2" spacers included); Durable, glass-filled nylon synthetic stock; Light, crisp trigger pull with minimal overtravel and positive reset utilizing proven 10/22 trigger components; Receiver includes an integrated Picatinny rail and is Type III hard-coat anodized for maximum durability; Includes one SR-Series pistol magazine and hex wrenches for rear sight adjustment, buttpad spacer adjustment and charging handle removal