The Smith & Wesson® M&P 15-22 Sport .22 LR Semiautomatic Rimfire Rifle is a true M&P 15-style rifle built from the ground up as a dedicated .22 LR semiautomatic – not an awkward conversion. Features a 10″ M&P Slim Handguard with Magpul® M-Lok®, Magpul folding MBUS® sights, six-position telescoping stock (compliant model comes with a fixed stock) and 2″ M-Lok Rail Panel that delivers customization options for optics and accessories. Two-position receiver-mounted safety lever, functioning charging handles, recessed magazine releases and ambidextrous load-assist buttons. Quad-rail handguards along with both upper and lower receivers are built with lightweight, high-strength polymer with integral steel inserts. Threaded 16.5″ carbon steel barrels (1/2 x 28″ thread) with flash suppressor on select models. Includes 10- or 25-round detachable magazine.