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https://midstatefirearms.com/product/nickel-boron-exo-m16-ar15-full-auto-bolt-carrier-group/
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Complete Nickel Boron Full Auto Bolt Carrier Group. 5.56/223 & 300 Blackout BCG. The nickel boron coating is excellent, extremely low friction and easy to clean. The coating is a high quality, Shiny high gloss coating like WMD & FailZero bcgs. 350 legend compatible too.
- M16 Carrier-8620
- Bolt-9310
- MPI Tested
- Upgraded Extractor Spring with o-ring
- Properly staked gas key
Made in the USA by a quality manufacturer.
You may find cheaper nickel boron bcgs, but many of those have a dull, flaky satin finish. These are hard and high gloss and super smooth.
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