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
    Quality!

    I replaced the SA BCG that came with my LMT upper. I wasn't having any issues with the LMT BCG but I wanted peace of mind of a high quality, mil-spec, reasonably priced part that follows the proper design of the BCG.

    Functionally, the BCM BCG cycles better than the SA BCG due to the added mass. Locking the bolt open feels better too for some reason. Overall I'm very pleased with this BCG.

    Lastly, BCMs customer service, quality and prices are top notch. Keep it up guys!

  • 5
    BCM The Best

    i just got my BCM bolt carrier group looks perfect well made product cant wait to put it on my upper

  • 5
    BCG sent frm AR Gods!!!

    Just received my BCM BCG nd took it out to the range hell I opened the package at the range nd put it in my build nd it was amazing. The best bcg I ever owned. The quality of the BCG is Excellent nd flawless. The shipping was by the fastest I've had any of my parts sent to me. I'm definitely gonna buy More of these thanx *BCM*

  • 5
    A work of functional art!

    I work of art! Functions FLAWLESSLY! Best BCG out there! Thanks for the sticker pack too guys! Bravo!

  • 5
    Great Bcg

    Arried Super fast 3 days, cleaned it lubed it then droped it in my AR with a DD upper, ran 250 rounds no problem, will buy another one for another build, and guess where i will be getting the upper from? Bravo Company is the way to go!

  • 5
    Cadillac upgrade !

    Bought a used RRA carbine with unknown milage on bolt carrier. A year later scraping, then FTE problem arises. Bought the BCM bolt carrier early Wednesday morn and it arrives noon Friday in Oklahoma. At the range the bolt carrier performs far greater than my old unit. I had installed a complete Vltor Imod buffer/stock and it really likes the Bravo carrier. Lockup is solid and function is perfect. Money well spent !

  • 5
    Awesome quality

    Best BCG I have ever purchased for this value. Super quick shipping!

  • 5
    Best BCG on the market!

    I got a custom built M4 that came with an AR-15 BCG. That AR-15 BCG wouldn't cycle worth a darn in my M4, I would have at least 2 or 3 FTF per magazine. Got this BCG, went through 200 rounds, not one FTF or jam. This BCG is flawless.

  • 5
    Customer for life!!

    After numerous digging and searching for a bcg for my build almost everywhere was sold out. My first interest was bravo and every time I was on the prowl for one it was always sold out until I got lucky and decided to double check bravo's site. As soon as I saw in stock, picked up one and got it in the mail 3 days later like they said! Congrats bravo, another happy customer and a life time buyer!