Brownells 75th Anniversary - A Shooting Heritage

Rock River Arms forged aluminum A4 style upper receiver with ejection port cover and forward assist installed. Features M4 feed ramps.

Paired with the Brownells B-TAC Bolt Carrier Group and Brownells Charging Handle.

The Complete M16 B-TAC Bolt Carrier Group boasts:

  • Fully assembled Bolt Carrier Group; including the bolt, bolt carrier, gas key, firing pin, cam pin, and firing pin retaining pin
  • Every Bolt is High Pressure Tested (HPT) with a proof load
  • Following the High Pressure Test, every Bolt is Magnetic Particle Inspected (MPI)
  • The Bolt is machined from 9310 steel
  • Following machining, the Bolt is heat treated and shot peened
  • Installed extractor includes black rubber insert with spring
  • M16 Bolt Carrier is machined from 8620 steel and hardened
  • M16 Bolt Carrier will function in semi-auto or full-auto AR-15/M16
  • Gas Key Screws are properly torqued and staked
  • Bolt and Bolt Carrier feature a matte black ntride finish

And the Brownells Charging handle is machined from aluminum with a matte black anodized finish.


Discontinued by Brownells

Product has been discontinued and no longer available.