Smith & Wesson M&P Sport III 5.56mm NATO 16in 5.56mm NATO Semi Automatic Modern Sporting Rifle - 10+1 Rounds - This model makes use of the Juggernaut Tactical magazine lock system with quick release rear takedown pin/opening pin. Built to perform under various conditions, the M&P SPORT III rifle is as versatile as it is reliable. Engineered for a wide variety of recreation, sport shooting, and professional applications. The new SPORT III offers more options to accessorize than the previous generations. Lightweight and rugged, the SPORT III embodies the best combination of function and form. Get unmatched value with the new M&P SPORT III. Threaded Barrel : 1/2 x 28; FREE-FLOATING HANDGUARD - Able to mount a multitude of aftermarket accessories; MID-LENGTH GAS SYSTEM - Users can expect less felt recoil when shooting; 1:8in TWIST 5R RIFLED BARREL - 5R rifling profile has consistent contact with the projectile, ensuring a more accurate rifle. The 1:8in twist rate allows for more variety of ammo to be used.; 6-Position Adjustable Stock; Installed with 10 Round Juggernaut Tactical magazine lock system;