BCM® Bolt Carrier Group (MPI) - Auto

MSRP: $199.00
Your Price: $189.00
(You save $10.00 )
(957 reviews) Write a Review
Maximum Purchase:
5 units
Milspec Carpenter No. 158® steel
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.

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.***

957 Reviews

  • 5

    Posted by Richard C Strawn on Sep 30th 2020

    Received in a timely manner. Product quality was excellent as expected from Bravo Company

  • 5
    bolted right up great fit

    Posted by JOSEPH S CELEK on Sep 29th 2020

    works great no problems at all

  • 5
    As advertised

    Posted by John on Sep 21st 2020

    Exactly what I expected from the best

  • 5
    Bolt Carrier group

    Posted by Cody on Sep 21st 2020

    Though I haven't been able to put any rounds through my rifle yet...thanks Covid. Bravo Company is very quick on order processing and I'm pretty sure it was shipped same day. The product is as described.

  • 5

    Posted by Trace Grisso on Sep 18th 2020

    Quality and precision one expects from BCM.
    Very happy!

  • 5

    Posted by Caleb Long on Sep 13th 2020

    I have to say that this bolt carrier group is the nicest bcg I own. I have always heard about the quality of bcm and decided I had to see for myself, and they did not disappoint! I haven't had the item long enough to give a review based on longevity but I have no doubt that this bcg will be running through anything I can throw at it. Its an honor to own a product made by a company that takes QC seriously like BCM, I trust that I can depend on their products with mine and my families life should it ever come to that. Thank you BCM!!!!

  • 5
    BCM Bolt Carrier Group

    Posted by Ken K on Sep 13th 2020

    Quality equals long term reliability. Bravo Company components are a part of all of my builds.

  • 5
    Bravo Company Full Auto Bolt cattier Group

    Posted by Ben C on Sep 12th 2020

    Not much to say. Every bcg in the industry is compared to the BCM standard, so I figured I’d get the standard all others are compared to. Didn’t regret it one bit. I used their SOPMOD upgrade kit on my old BCG and it improved it so I figured why not just get the real deal. It eats anything I feed it. Steel case and crappy brass all the way to match ammo. Runs like a champ. I have it in an AR I built using the 11.5” ELW barrel, 10” KMR handguard, and BCM’s gas block and tube. Runs like a top. I will put these in any AR I own/build from now on.

  • 5

    Posted by AJ on Sep 12th 2020

    Haven't shot it, but the quality in craftsmanship is wonderful. With that in mind and the reputation this BCG has I'd say it's worth the money. Shipped quick too.