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
    Top Notch BCG

    Recieved fairly quickly,like in 3 days after ordering. Put in my New AR build (also have gunfigher CH) took it to the range this past weekend and not one hiccup! Gonna use on my next build for sure! Thanks BCM...

  • 5
    BCM BCG

    They shipped this part out quick received this in 3 days. Just in time to hang out with some buddies at the range. They take pride in their shipping as they do in their products/service. I will not hesitate to purchase again and again. Thanks BCM!

  • 5
    Awesome

    Best BCG period. Why spend the same or more for anything less, thanks BCM!

  • 5
    BCM BCG

    My opinion, this is the ideal bolt carrier group. Amazing quality and built to the highest specs

  • 5
    BCM bcg

    Top notch bcg no doubt about it. Finished my most recent build with it and headed straight to the high country. I slung 2k rounds without any issues at all. I will use this bcg on every build from now on.

  • 5
    Awesome!!!

    I recently purchased a BCM Upper and Gunfighter Charging Handle so this completes my build had a Spikes Tactical lower this is top notch quality Shipping was fast ordered thursday got in on Saturday my next build will host BCM thanks alot!!!

  • 5
    The best BCG money can buy

    I ordered this along with my upper a few months back and it is by far and wide the best BCG I have ever used. I won't even consider using anything but BCM in my builds from now on.

  • 5
    Great Product

    Buy with the utmost of confidence! This is a top of the line BCG. Arrived in three days, and I haven't had one failure out of around 300 rounds. Has been running great with a Vietnam-era mag with old springs. Would highly recommend!

  • 5
    BCM Gunfighter Bolt Carrier

    If haven't changed out your factory BCG, than do it now and with this one. I have written reviews on a lot of BCM's products and I could write a book on all the benefits BCM's AR-15 BCG, Charging handle, etc has to offer. This is another one of those upgrade/replacement parts that is a must. This BCG has so many benefits that you have to see for yourself. Just like the other reviews state, "Not a penny wasted." Get this BCG and you will feel very confident about it and will wonder why you did not do it earlier. I took it out to the range the day I got and I fired 1000 rounds of cheap PCM ammo and I let it sit over night and didn't even clean it. I took it out the next day and fired another 1000 rounds of the same cheap ammo. Not one jam! It continued to operate with no malfunctions. Get this product now. For the money, you can't beat it.