The a3s rifle features a black powdercoat finish, black polymer fixed stock with sling attachment (classic look), 18" tapered barrel that accepts 5/8 x 24 threaded barrel accessories and polymer navy lower.The precision-welded 7.50" top rail allows the addition of your favorite scope or you can use the traditional iron sights (included).Action: Semi-AutoCaliber: 7.62x51mm NATOBarrel Length: 18"Capacity: 20+1Trigger: 9-10 lbsOal: 40.50"Weight: 9.50 lbsMuzzle: ThreadedReceiver Material: SteelSights: IronBarrel Description: TaperedTwist: 1:10"Barrel Length Range: 18" to 18.99"Weight Range: 9 lbs to 9.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Blued/Black