Windham weaponry's src in 223/5.56 nato comes equipped with a 6-position buttstock, mid-length heat shield hand guards, and one 30 round magazine.This semi-automatic rifle is powered by a mid-length gas impingement system.Metal Finish: Black Hardcoat AnodizedAction: Semi-AutoCaliber: 223 RemBarrel Length: 16"Capacity: 30+1Safety: ManualOal: 32.75"-36.13"Weight: 6.35 lbsStock Description: 6 PositionMuzzle: A2 Flash SuppressorReceiver Material: AluminumSights: None, Optic ReadyBarrel Description: 4150 Chrome Moly VanadiumTwist: 1:9"Barrel Length Range: 16" to 16.99"Weight Range: 6 lbs to 6.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Blued/Black