Armalite's m153gn is the flagship competition rifle built to win.This rifle is compact, light, and ultra-fast.The low profile handguard, with a railed front sight base, covers a free-floating stainless steel barrel with armalite's own tunable muzzle brake.An adjustable gas block also allows the rifle to be individually set for optimal performance.It has an mba-1 lightweight precision stock (adjustable lop/comb height), timney single-stage trigger, and raptor ambidextrous charging handle.This model has an 18" barrel and a rifle-length gas system beneath a 15" free-float 3-gun handguard.It includes a 30-round magazine.Metal Finish: Black Hardcoat Anodized/Black PhosphateAction: Semi-AutoCaliber: 223 RemBarrel Length: 18"Capacity: 30+1Trigger: TimneySafety: AmbidextrousOal: 39.50"-40.50"Weight: 7.80 lbsStock Description: Adjustable Luth-AR MBA-1Muzzle: Armalite Tunable BrakeReceiver Material: 7075 T6 AluminumSights: None, Optic ReadyBarrel Description: Stainless SteelTwist: 1:8"Barrel Length Range: 18" to 18.99"Weight Range: 7 lbs to 7.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Blued/Black