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
    First AR Build

    I did a lot of research on bolt carrier groups before I built my AR, almost everywhere I looked for advice, BCM was always in the list of top 3. Great quality, no issues whatsoever.

  • 5
    So far so good

    Initial inspection looks great, machining is clean and smooth. I've only put 120 rounds through it so far and only round count will tell the real story but so far quality looks great as to be expected from BCM.

  • 5
    BCG

    Absolutely love it! Quick delivery, BCG is in operating as it should!

  • 5
    Top notch Part

    I am A M16 armorer, NRA firearms instructor, and a Police Officer. I buy the absolute best parts for my firearms. I demand NO FAIL components in all of my builds and firearms whether it's for me or some one I am building for. That's why I buy Bravo Company. It has been said "There are no second place winners in a gunfight" and with that being noted, failure is not an option. Buy Bravo Company.

  • 5
    Bcm Bolt carrier group.

    Bravo company came highly recommended by a former marine friend. I have not been dissapointed with any part ive ordered. The Bcm bolt carrier group is well put together and properly assembled and made of high quality materials. I personally recommend this product to anyone looking to upgrade the bcg or for a custom build, you wont be disappointed!

  • 5
    Great

    I bought this bolt carrier group for an AR15 build I did. It functions like it should and it's kind of cool that when I chamber a round and the dust cover pops open there is the BCM logo. I ordered my bolt carrier on a Friday at midnight and was on the range with it on Monday. I threw the cheapest ammo I could find at it and it feeds and ejects like a dream. If you want quality this is the way to go, I'll never buy anyone else's crap again.

  • 5
    Best BCG you can buy.

    I've built 5 AR's so far and have tried several different BCG's. After learning all I could from the gun community, BCM is everyone's top choice. Idk how many rounds I've put through my main piece but that BCM BCG is still in perfect condition. Like even the finish is perfect. You won't be disappointed.

  • 5
    Outstanding Product

    This BCG is well made by people who understand the need for quality. It is obviously an outstanding unit that should give great service for years, plus it arrived with Bravo's fast service.

  • 5
    Runs great

    Glad I purchased my BCG from BCM. They are very few companies besides Colt that I would purchase parts from and BCM is one of them. With BCM you know that you got not only mil-spec but also the very best.