Shop › KAK AR15 BCG M16 556 K-SPEC SV CHR KAK AR15 BCG M16 556 K-SPEC SV CHR $219.99 KAK Industry K-SPEC Enhanced, Bolt Carrier Group, For AR-15, 556/300 Blackout, 9310 Steel Bolt, Hard Chrome Finish, Silver, Dual Ejector, Side Vent 425-0505-003 Quantity: Add To Cart Added! KAK Industry K-SPEC Enhanced, Bolt Carrier Group, For AR-15, 556/300 Blackout, 9310 Steel Bolt, Hard Chrome Finish, Silver, Dual Ejector, Side Vent 425-0505-003