Smith & Wesson M&P 15, Sport II, Optics Ready, Semi-automatic, AR, 556NATO, 16 Barrel, Black, Fixed Stock, 10Rd, Flattop, California Compliant Blade 12055 M&P15 Rifles are the ideal modern sporting rifle. Built to perform multiple uses under various conditions, M&P15 Rifles are as versatile as they are reliable. Engineered for a wide variety of recreational, sport shooting and professional applications, M&P15 Rifles are easy to accessorize, but hard to put down. M&P15 Rifles are lightweight and rugged embodying the best combination of function and form.