AR15 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT - NICKEL BORON
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If purchasing a BCG with a barreled upper, we recommend the following:
M16 Profile BCG for all Pistol / SBR uppers and 16" barrels with a carbine
gas system. AR15 Profile BCG for 16" barrels with a mid-length gas system,
18", 20" and 24" barrels. These are general recommendations. Please call us
with any questions or concerns before you place your order.

Thank You, MAS Defense.

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 BCGs. They are even an improvement
over Hard Chrome.

- Nickel Boron Plating is completed by WMD or UCT (who plate for Fail Safe).
- Bolt: MPI Tested 9310 Nickel Boron Plated. 7% Stronger than C158.
- Extractor: Precision Machined Hardened Tool Steel
- Gas Rings: Stainless Steel per Mil-Spec
- Carrier: AR15 Profile Carrier 8620 Nickel Boron Plated
- Gas Key: 4140 Nickel Boron Plated
- Gas Key Screws: Grade 8 Properly Staked
- Cam Pin: Precision Machined Nickel Boron Plated
- Retaining Pin: Precision bent and cut to length
- Firing Pin: 416 Stainless Steel
  • Item #: AR15BCG-NB
  • Condition: New

AR15 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT - NICKEL BORON

Price: $154.99
Sale Price: $114.99
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