The 9r model features an m-lok compatible aluminum handguard and 16.2 crowned barrel.Both a push button and paddle magazine release are standard.The 4.5 precision-welded top rail enables use of your favorite optic or the traditional iron sights (included).The fixed polymer stock includes a sling attachment point.The gun ships in a plastic rifle case with two 30-round magazines.Metal Finish: BlackAction: Semi-AutoCaliber: 9mm LugerBarrel Length: 16.20"Capacity: 30+1Safety: LeverOal: 34.50"Weight: 6.32 lbsStock Description: FixedMuzzle: CrownedReceiver Material: 7075-T6 AluminumSights: IronTwist: 1:10"Barrel Length Range: 16" to 16.99"Weight Range: 6 lbs to 6.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Blued/Black