0219103270055 DD4 RIII *CA Compliant 5.56 NATO 10+1 16" Black Steel Barrel, Black Hard Coat Anodized Aluminum Receiver, 12.50" M-Lok Handguard, Black Synthetic 6 Position Stock w/SoftTouch Overmolding, Black Polymer GripDaniel Defense
5.56x45mm NATO