The M&P15-22 SPORT features a 10-inch M&P slim handguard that incorporates the popular Magpul M-LOK(TM) system. The M-LOK system allows rifle owners to easily customize their M&P15-22 SPORT by adding accessories without removing the handguard.Specifications: 10" M&P(R) Slim Handguard with MAGPUL(R) M-LOK 6-Position CAR Stock MAGPUL(R) MBUS(R) Folding Sights Action: Semi-automatic Caliber: 22 LR Color: Black Type of Barrel: Threaded Sights: Flip Up Rear Finish: Armornite Type: AR Barrel Length: 16.5" Grips: A2 Grip Capacity: 10Rd Stock: M4 Fixed