Kies Firearms Nickel Boron M16 Carrier w/ properly staked gas key-(Does not include bolt)
These carriers are individually polished and have impeccable machine work and finish. Carriers are made from 8620 Tool Steel.
Nickel Boron has proven itself to be the Most durable finish on the market. It's so good that it's being adopted by the Military and many Government agencies. It will Never chip, peal, or flake off. It's much smoother than Hard Chrome, it's easier to clean and you can run it almost lube free for thousands of rounds due to it's self lubricating properties. These BCG's are a huge improvement over a Phosphated BCG, They are even an improvement over Hard Chrome.
Kies Nickel Boron Carriers will work with all AR15 or M16 rifles or pistols. Kies Nickel Boron Carriers will accept bolts in many calibers including the following: 223/5.56, 300BLK, 204RUG, 6.5 Grendel, 264LBC-AR, and 6.8SPC.