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 product

    I own three ARs and all of them have a BCM BCG. It's the best I've ever put into a rifle and the only one I use. I trust it's craftsmanship and dependability. As Grandma used to say, "Sweet as snuff & half as dusty."

  • 5
    Bolt carrier group

    High quality built. Really like the coating. Solved my short stroke issues completely

  • 5
    BCG

    I have owned a BCM 11.5” upper for over a year now using the BCM BCG, I have yet to see any issues with that one. It’s has hardly any wear on the finish and runs like a champ. I just recently purchased a BCG for another build I’m doing, I have not had the chance to put my new BCG into action as of now but I am positive it will function flawlessly. I have faith in the Products that BCM puts out. BCM is my go to for many of my firearm related needs.

  • 5
    BCG

    Flawless.

  • 5
    Bolt carrier group

    By far the best BCG ive ever had in a rifle, its flawless!

  • 5
    BCG

    Is there any other?

  • 5
    Bolt carrier

    Looks to be top quality. Staked gas key. Fast shipping from BCM. Have not used yet but have high expectations. Will test fire when ammo returns to normal supply levels.

  • 5
    Remarkable BCG without the exorbitant cost

    Exceptional quality and quick service as expected from BCM. You receive the same workmanship from Bravo Company as you would from higher-priced competitors except at a reasonable price point. This is why I will always opt first with BCM.

  • 5
    Great bolt carrier group

    The bcg functions perfectly. It came with properly staked gas keys, chrome lining, and mpi tested.