BCM® Bolt Carrier Group (MPI) - Auto - FLAT DARK EARTH-IB

MSRP: $224.00
Your Price: $209.00
(You save $15.00 )
Maximum Purchase:
2 units
Milspec Carpenter No. 158® steel
Stock Status:

Out of stock

Stripped carrier is finished in an Ion Bonded Flat Dark Earth. Lowers friction and cleans easier, however the carrier still needs a thin coat of oil on it at all times.
The color, tint, and tone of this finish will vary from batch to batch, can and will be slightly different than photos.

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.

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.***

351 Reviews

  • 5

    Amazing quality as you would expect from BCM, I know this BCG is the last part to give up in any rifle. Having multiple rifles from this company (including lowers) I have never been disappointed by the quality . They’re some of the best tools out there.
    Thank you BCM!

  • 5

    BCM sets the standard of high quality BCGs. I also love the FDE cerekote and how it looks. You can't go wrong with BCM and if these are available I always pick them up.

  • 5
    BCM Rocks

    As always BCM delivers the best products
    This bolt carrier group is the best

  • 5

    I purchased a fail zero bcg several weeks ago because the state of the economy these days it’s the first that I’ve found in forever. Needless to say it did not work for me. It would eject a shell but not come back far enough to load another. Doing research online the one problem people have with those is that problem. Took it back, the sky’s parted got an email the next day that these guys were in stock….. runs flawlessly couldn’t be happier

  • 5
    Nice BCG

    Showed up looked great and properly staked. Took it to the range and had zero issues. I only put about 50 arounds through my BCM rifle and the BCG looked fine.

  • 5

    Everyone knows the hardiness of BCM. Use these for all my rifles and and never have any issues. This particular bcg has the fde finish which looks great especially will all your dual tone guns.

  • 5
    Bolt carrier group

    Amazing bolt carrier group. When properly maintained, the bolt cycles flawlessly. Shot 3.5-4.5k rounds through this right before the pandemic with 10 malfunctions (lack of lube). You can easily shoot 1,000 rounds without cleaning as long as you keep this bad boy wet.
    Works well with my surefire socom RC2 suppressor.
    Awesome color scheme.
    Only negative about the bolt carrier group (or all), is that the logo that is laser engraved tends to fade/smear on the metal to metal friction. I expected this. That and it took very long to become in stock due to pandemic, civil unrest and the election.
    Willing to wait for quality product.

    If you’re thinking about buying it, do so.
    Send it

  • 5
    best bcg

    amazing, everything you expect from BCM plus great look too.

  • 5
    Bcm perfection

    Nothing surprising here, this bcg is pure perfection. Wouldn't expect anything less from BCM.