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
    Best BCG I’ve ever bought.

    This was the best purchase I made for my AR. I refuse to buy any other bcg. Just waiting for them to make a .308 BCG for my AR-10.

  • 5
    Bolt carrier group

    Fantastic quality and reliability

  • 5
    BCG

    This BCG is bulletproof. All the best components.

  • 5
    BCM BOLT CARRIER GROUP

    This was my first purchase with Bravo, and I just placed another order due to finally obtaining quality parts vs parts that advertise "Mil-Spec" but the parts do not hold up as hoped. As an old Marine,
    I respect the quality of parts, service, and feed back Bravo Company provides on their products.
    "God, Guns, Guts"

  • 5
    BCM BCG

    Amazing product, I have this bolt carrier group and almost every rifle I own. Never once had an issue.

  • 5
    BCG

    Its a great addition, ran 500 rounds through it with no issues.

  • 5
    Impressive

    Might be a bit pricer than others for a non Nickel Boron BCG but the workmanship and tolerance is great. Staked perfectly and runs very smooth, worth every penny.

  • 5
    Perfect

    Put it in my first AR build and it had worked perfectly. I will always use BCM bolt carrier groups for now on!

  • 5
    bolt carrier group

    excellent product, i used it to zero a AR15 within 5 shot groups