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 & Charging Handle

    Awesome Company, the Quality of your products are made to the highest of standards (the best of the best) your processing and shipping were super fast received my products within 2 days of ordering. Keep up the Great work.

  • 5
    BCM BCG (MPI)

    Excellent Product, didn't expect anything less from BCM

  • 5
    Awesome BCG

    The BCG works flawlessly in my Bushmaster AR 15
    Great Product. I read the reviews and decided it was worth purchasing.

  • 5
    only bcg I will buy

    I don't skimp when it comes down to a bcg, it is the life of your rifle so I will only be buying bcm bcg, now on the other hand when it comes down to dressing up my AR that is where I will save a few bucks, enuff said.

  • 5
    BCM Bolt Carrier Group (MPI) - Auto

    Bought many Product,s from BCM and everything is top notch

  • 5
    First time buyer

    Grate and happy with my BCM Bolt carrier group, would recommend to any one.

  • 5
    Excellent as expected.

    So far so good. I only have the old pre ban colts to base it off of, but seems great. Chews up the cheap steal and every grade of ammo I've fed it so far, aprox. 300 rounds of various ammo with 0 malfunctions. Seems like the hype and reputation is deserved.

  • 5
    Solid product.

    I've worked with a few different Bolt Carrier Groups. The BCM is superior to those I have experience with. It felt more solid and well manufactured. The only one similar to it may be "fail zero", which I personally felt was a little heavy. This is a BCG without the "no lubrication" gimmicks; one that simply runs without failure. This is it! BCM is my personal favorite.

  • 5
    Excellent

    The BCM BCG is one of the best in the business like all BCM stuff. It's the only BCG I buy. Build quality is excellent and price is reasonable for what you get. I highly recommend BCM for any AR needs!