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
    1st AR Build

    I ordered the BCM Bolt Carrier Group and they shipped it the next day. This Bolt Carrier Group arrived turnkey and ready to go. I dropped it in my new AR build and ran a couple of hundred rounds through the gun without a hitch. I highly recommend it. Last but not least, it looks good too.

  • 5
    BCG

    I disassembled and re-assembled the BCG, it looks good, also it is marked for testing MPI and is HP tested.

  • 5
    Quality

    Bolt carrierand bolt were purchased, shipped, and arrived within a few days. Great shipping. Parts were all of the highest quality and are going into a MK 12 build. Went into the upper and functioned perfectly right out of the box as expected from BCM. Will continue to buy products from BCM. Extremely satisfied.

  • 5
    BCM Bolt Carrier Group

    As always BCM has the best quality in the industry! I have multiple ARs with BCM parts and have not had any issues to date. The only issue I have with BCM is the website keeping items in stock. When they do have the items in and ordered, they ship fast! I have many more builds in the future and will continue to purchase BCM products.

  • 5
    Suburb

    The bcg performs flawlessly. 1000 rounds no issues.

  • 5
    Bcm/BCG

    Fit finish and function is fantastic quality as expected by BCM.

  • 5
    Perfect.

    Mil spec and properly built in every way.

  • 5
    Recent purchase

    Outstanding quality!!!

  • 5
    Purchased producted.

    Thanks guys, all of you are truly great! Thanks for all of have served our great country! Let's make America Great Again.