BCM® Bolt Carrier Group (MPI) - Auto

MSRP: $214.00
Your Price: $199.00
(You save $15.00 )
(1247 reviews)
SKU:
BCM-BCG-AUTO
Features:
Milspec Carpenter No. 158® steel
BCM® Bolt Carrier Group (MPI) - Auto
Stock Status:
BCM® (MPI) complete bolt carrier group is fully assembled. (BCG)

Bolt carrier group (auto version) for your AR15, M16, or M4. Parkerized exterior and chrome lined inside carrier. Machined to USGI specifications. This M16/M4 carrier includes the proper Mil-Spec gas key. Gas key is chrome lined and heat treated per GI specifications. Gas key is secured to carrier via USGI domestic mfg Grade 8 fasteners and properly staked per Mil-Specs. These properly hardened parts ensure a strong staking and proper gas system functioning.

The bolt assembly is machined from the correct Mil-Spec Carpenter No. 158® steel, shot peened for increased strength, includes tool steel machined extractor and ejector, BCM Extractor Spring, and is HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected).

Prior to shipping, all BCM Bolt Carrier Groups are test fired for function. As such, the Bolt Carrier Group will show handling marks consistent with these quality control procedures.
 
Watch the video below to learn more about our quality control for Bolt Carrier Groups:
 
 
Written by Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE), Chief of the Firearms Technology Branch
...M16 bolt carriers are not designed and intended solely and exclusively for use in converting a weapon into a machinegun and are not any combination of parts from which a machinegun can be assembled. Further, an M16 bolt carrier is not a firearm as defined in the GCA or a machinegun as defined in the NFA. An M16 bolt carrier is simply a machinegun part and as such its domestic sale and possession is unregulated under the Federal firearms laws. It is not unlawful to utilize a M16 machinegun bolt carrier in a semiautomatic AR15 type rifle.
 
***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit www.p65warnings.ca.gov.***

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1247 Reviews

  • 5
    True no bs milspec bcg

    I've been running bravo company bcg and rifles for a long time, and none of them have ever let me down. The quality is second to none. In world where the term "milspec" is thrown around and used very loosely, bravo company builds true no bs milspec. The quality control is unmatched in the industry, and unlike the majority of the firearms industry they actually tell you what material it's made out of, what heat treatment, what it weighs, and so on. Bcm is as good as it gets today. Buy Bcm and never look back!

  • 4
    Great bcg

    Fast shipping and a great looking bcg. Can't give a 5th star without first testing

  • 5
    Bcm bolt carrier

    What a awesome piece. Like the saying goes....you get what you pay for. And that's a part you don't want to skimp on.

  • 5
    Bolt carrier group

    Excellent product just as with everything from this company. Could tell it had been fired but they say that as it is part of process would put in any of my rifles once again great product.

  • 5
    BCG

    By far, one of the best BCG 's on the market.

  • 5
    Really Great Products

    Great attention to details, looks as if nothing was held back. Thank You BCM for another great product. I look forward to doing more business with you.

  • 5
    Would recommend to others

    Bolt assembly arrived quickly and in perfect condition. I've run 80 rounds through it so far without issue.

  • 5
    As good as it gets...

    Nobody makes a better BCG, and at this price I don't even shop around. Ordered two of these on Wednesday night, they were on my porch at noon Friday.

    I want to build a BCM AR10 next...

  • 5
    Excellent Quality

    Very pleased with this BCG. I did not notice where it had been pre-fired for testing as I had been told. Certainly did not concern me. Shipping was fast as always.