The Faxon 5.56 M16 Bolt Carrier Group Nitride is a high-performance and reliable upgrade for your AR-15 rifle. This bolt carrier group is designed for optimal performance and is made from top-quality materials ensuring durability and longevity. The nitride finish on the carrier and bolt provides added corrosion resistance making it a great choice for use in harsh environmental conditions. The Faxon 5.56 M16 Bolt Carrier Group Nitride features a full-auto rated design making it compatible with M16-style rifles and other firearms that use a similar operating system. The enhanced design of the bolt carrier group provides smooth and consistent cycling resulting in reliable and accurate performance. With a user-friendly design and easy installation process the Faxon 5.56 M16 Bolt Carrier Group Nitride is an excellent choice for both novice and experienced gun enthusiasts. Whether you’re using your rifle for hunting competition shooting or self-defense this bolt carrier group will provide you with the reliable and consistent performance you need. Upgrade your AR-15 rifle today with the Faxon 5.56 M16 Bolt Carrier Group Nitride. Seeing “MIL-SPEC” as just the starting point we set out to ensure the best options are available for our demanding customers. Improvements include using 9310 tool steel for the bolt nitriding the assembly to increase surface hardness decrease resistance and have superior corrosion resistance compared to typical chrome and phosphasted bolt carrier groups. All bolts are fully MPI tested to ensure the material is sound and without defects. Bolt lugs are chamfered 45 degrees to ensure reliable action for even the highest pressure hand loads and fast lightweight actions. Faxon Bolt Carrier Groups are Superfinished to reduce friction increase smoothness of operation and reduce fouling. Further they are full-Auto rated and maintain the trip for full-auto fire control groups and new multi-stage trigger systems. Gas keys use grade 8 fasteners and are fully staked for a lifetime of service.