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
    Excellent quality

    The bolt carrier group is excellent quality.

  • 5
    The standard by which other BCGs are judged.

    Although my initial BCG was shipped with minor gouges that appeared as if the carrier had been dropped, BCM quickly made it right for me and cross-shipped a second. Excellent customer service from a company that makes sure their customers are taken care of!

    Aside from the presumed fall damage on the first BCG, both were perfect. The staking on the gas key on both was excellent, and there was carbon residue on both bolts, indicating that they had been test fired. I didn't take the calipers to the first, but tolerances on the second measured well within spec; and as expected, it worked flawlessly.

  • 5
    Customer review

    Review body is empty

  • 4
    Good so far

    I haven't put many rounds through it yet, (around 300 or so) bit it seems to be high quality. Only very minimal wear on the normal parts. No issues, bcm delivered quick too. Ordered on a Friday and got it Monday if I remember correctly.

  • 5
    Good quality

    So far so good. The ordering process was smooth and got my BCG fairly quickly.

  • 5
    BCG

    Needed to replace my old bcg, so I went with BCM. Everything looked great from the eye test, and ran flawless with 200 rounds so far.

  • 5
    Customer review

    Quality second to none. Quick delivery.

  • 5
    BCG

    I received my Bravo Company BCG quickly as it shipped same day. I was packed well and was in excellent condition. I put it in a Radical Firearms 300 ACC Upper and it works great.

  • 5
    Backup BCG

    You can’t go wrong with a BCM BCG. I highly recommend using them in every rifle as well has having at least one as a backup.