The m&p15-22 sport features a 10-inch m&p slim handguard that incorporates the popular magpul m-lok system.The m-lok system allows rifle owners to easily customize their m&p15-22 sport by adding accessories without removing the handguard.The removable magpul mbus front and rear folding sights are lightweight and durable, further enhancing the performance and value of the new m&p15-22 sport.Metal Finish: BlackAction: Semi-AutoCaliber: 22 LRBarrel Length: 18"Capacity: 10+1Trigger: Two-Stage MatchSafety: Manual ThumbOal: 37.30"Weight: 5.60 lbsStock Description: Fixed VltorTwist: 1:15"Barrel Description: Carbon SteelMuzzle: CrownedReceiver Material: AluminumSights: Magpul MBUS Front & RearBarrel Length Range: 18" to 18.99"Weight Range: 5 lbs to 5.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Blued/Black