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
    BCM BCG

    Great product at a reasonable price, just like everything BCM sells. Fast shipping.

  • 5
    Buy with confidence

    I have had problems for other BCG's has key not being properly staked, one look and you know that those keys are never going to move!

  • 5
    Very fast shipping...

    Ordered a new bolt carrier on a Friday, to replace a bolt carrier that had a major failure at the range that morning. By Tuesday afternoon, it arrived in the mail. I have been very happy with it...

  • 5
    Great BCG

    Beefy and beautiful like Serena Williams! Best BCG I've come across. BCM shipped it fast. I have no complaints. Thanks BCM for producing quality products.

  • 5
    Received quickly. Top notch product!

    BCG arrived at my house with 48 hours of ordering. Was simply packaged and came well lubed from BCM. Dropped it into a recently purchased upper and found no issues with mechanical function. Looking forward to range testing it.

  • 5
    Bolt carrier groip

    Top of the line BCG @ a very reasonable price.

  • 5
    BCM Bolt Carrier Group

    Fast shipping, Excellent quality

  • 5
    Awesome quality and super fast shipping

    This bcg is a bargain at the price BCM is charging.
    Top notch quality and piece of mind to go with it.
    I received it in two days! Stickers are always appreciated as well. It is sometimes the little things that make a good experience great.
    Thanks BCM

  • 5
    Bolt

    Got it quick, like, really quick. Great product, and at a reasonable price considering the process for making it. Even came with some stickers. Cool stuff. 👍