Fail Zero optimum Bolt Carrier was crafted for the traditionalist individual who wants a A lot more performance than a out-of-the-box, run of the mill phosphate carrier. Our Standard Mil-Grade Carriers are crafted from finest heat treated 8620 material. Featuring full forward assist teeth, M-16 cut and traditional profile. The Bolt is a .223/5.56 Carpenter 158 heat treated steel and MPI Certified. Included are the Mil-Grade Gas Key, Cam Pin, Firing .
The Cam Pin is Boron coated
Firing pin,cam pin and should be replaced every 10,000 rounds for optimum performance
Please note: If the listing says "in-stock" it means we have all of the items in stock. Our assembled upper receivers are made to order, and as such, it may take up to 10 business days for your order to be ready to ship out. If that is a problem, please email or call us to let us know!