6MM ARC

AR-15 12″ 6MM ARC GUNNER SEMI-AUTO PISTOL / MLOK / SBA3. FFL transfer item. All NFA rules apply. Features:Barrel: 12” length Barrel chambered in  6MM ARC 416R , Nitride coated Rate: 1:7.5Feed Ramps: M4BCG: M16 Case Hardened 8620 Steel Nitride Coated , 6.5 Grendel, Mil-Spec/M..