The Odin Works ACC65BCG Bolt Carrier Group is designed for AR-15 platforms chambered in 6.5 Grendel Type 2. It features Type 2 6.5 Grendel bolt face compatibility and a Black Nitride finish for corrosion and friction reduction. MPI and HPT tested for quality assurance. Manufactured in the USA, this bolt carrier group uses a 8620 steel carrier and a 9310 steel bolt to deliver reliable performance in AR-15 rifles chambered for 6.5 Grendel Type 2. Notable restrictions: this item cannot be shipped to California, Illinois, or Washington.