The bolt carrier is made with 8620 steel while the bolt itself is made with 9310CS. The entire BCG is polished, hardened and coated with Titanium Nitride giving it a beautiful semi-gloss coat. The firing pin is 8749CS with a hard chrome milspec finish. All aspects of the BCG meet or exceed milspec.
We are so confident that you will be 100% satisfied with this product that we have backed your purchase with our 30 day money back guarantee. Made in USA