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
    The best you can buy

    No special donkey jiz coating. Just smooth functioning quality. Battle gun ready.

  • 5
    BCM Bolt carrier

    The BCM Bolt Carrier Group is a quality piece of equipment as good as a Colt Bolt Carrier Group and maybe better. The reason, BCM actually has a better quality control process in my opinion and they really care about the BCM brand. I have two complete BCM guns and all I can say is... reliably perfect!

  • 5
    BCM BCG

    This is a premium quality part that BCM sells at an affordable price. It is solidly built, with excellent fit and finish. I have used these BCGs in several builds as a way to save cost without compromising functionality.

  • 5
    Quality

    If it has BCM on it. You know it's a super quality piece and it's gonna work every time.

  • 5
    BCM M16 BCG

    Excellent Bolt group, exactly what i needed.

  • 5
    Perfect

    Couldn't get a better bcg for your ar15

  • 5
    Best on the market

    This is my second BCM auto bolt carrier, I bought it for a recent SBR build. Nothing beats the quality, better than mil-spec manufacturing by BCM. They are now my preferred bolt carriers for all of my rifles.

  • 5
    Still new

    Only put about 150rds through the gun so far but this bolt seems to be very well built I love it! Bcm always makes nice stuff though! I def recommend!

  • 5
    Top knotch experience

    Really happy with the product and service. Good price and good quality mixed with prompt shipping of product equals a good experience for me. I will most likely be ordering again from this company.