MPN: R0081


  • High pressure tested (HPT) and magnetic particle inspected (MPI)
  • Shot peened
  • CNC precision-grind the bolt lugs
  • Self-lubricating polished black Nitride finish
  • Exceed Mil-Spec standards for performance, reliability, and durability
  • Properly staked gas key


  • Caliber: 5.56 NATO / .223 Rem. / 300 Blackout
  • Weight: 11.5 oz.
  • Finish: Black Nitride
  • Material:
    • Bolt Carrier: Case hardened 8620 steel
    • Bolt: Case hardened 9310 steel
    • Gas Key: 4130 steel (attached using Grade 8 hardware)
  • Profile: M16

**A full-auto (A.K.A. M16) bolt carrier installed in a standard semi-auto AR-15 will not make the gun fire full-auto.


  • AR-15


  • 1x Bolt Assembly
  • 1x Extractor
  • 1x Cam Pin
  • 1x Bolt Carrier
  • 1x Carrier Gas Key
  • 1x Firing Pin
  • 1x Firing Pin Retaining Pin


When you’re done messing with inferior equipment and you’ll take the time to choose the best components to upgrade your rifle or build one from the ground up. If a M16 style bolt carrier group is one of the components you’re after, the Radian Weapons Enhanced Black Nitride Bolt Carrier Group should be at the top of your list. They’ve spared nothing here, and the result is a bolt carrier group of such fine quality you’ll be hard pressed to do better at any price.

Precision Machined Black Nitride Bolt Carrier Group

Radian precision machined the body of this enhanced M16 bolt carrier group from 8620 case hardened steel. The bolt itself is 9310 case hardened steel. Radian BCG been shot peened, high pressure tested and magnetic particle tested and then given a slick Black Nitride coating. The ultra-smooth Black Nitride finish features a lubricity all its own for long lasting smooth operation without additional lubricants to attract dirt and mess up the works. Radian even took the time to precision-grind the bolt lugs on CNC equipment after they were heat treated. As a result, there’s no distortion to adversely affect accuracy. The result is a Black Nitride bolt carrier group that will outlast the competition, cycle after cycle.

Radian BCG Is Designed For The Real World

Radian not only machines their enhanced bolt carrier group from the best quality American made steel, they per-installed a 4130 steel gas key and take the time to properly stake it so you don’t have to worry about failure or redoing the job yourself. Radian only wants to put the best quality products into every shooter’s hand. Whether you’re in special ops, or you just want to build the best weapon system for your own defense, This Radian BCG will serve you well in the real world.

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