Black Rain Ordnance Left Hand Bolt Carrier Group 223Rem/556NATO, Biohazard Engraved, Nickel Boron Finish BRO-BCG-LH

Brigade Manufacturing 5.56 Forged 7.5" 30+1 Armor Black

Brigade Manufacturing 5.56 Forged 10.5" 30+1 Armor Black

Stern Defense SD BU9 Semi-Auto Only Complete Bolt 9mm, Black

BATTLE ARMS Enhanced Bolt Carrier Group AR15/M16 Black

Arms Republic .308/7.62 Bolt Carrier Group (BCG) - Nitride

Griffin Armament GAREC5AM-W 5 RECCE 5.56mm 1.50" Black Stainless Steel 1/2"x28

Black Rain Ordnance BRO24102501 Spec15 556 NATO 7" Black Nitride Steel Barrel, Tungsten Gray Cerakote Receiver, Black Stock