KAK Industry K-SPEC Enhanced Low Mass, Bolt Carrier Group, For AR-15, 556/300 Blackout, 7075 Aluminum, 9310 Bolt, NP3 Bolt and Cam, Satin Gold Carrier, Duel Ejector, Down Vent 425-0510-002

This is not a hard use BCG. This is considered a consumable part, AR's with dialed in gas and buffer systems will prolong the life of this item. Recommended gas systems- Mid length, Rifle Length, or similar. Aluminum carrier with Satin Gold Anodize (Mil-Spec buffer anodize color).