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
    Bcg

    Excellent quality would buy again

  • 5
    Bcm bcg

    Only 60 rounds trough it with no problems I’ll update after 1000, overall is a 5 stars.

  • 5
    Best BCG

    runs flawlessly with my 10.5 ar pistol build, the BCG came with a free o ring witch really helped with my build since the bcg recommended that i install it in any barrel 14.5 or shorter....Ran 150 plus rounds the first use all ran flawlessly! great product.

  • 5
    The best there is

    Best BCG out there in my experience. Has never failed me.

  • 5
    BCG

    Very smooth. Looks to be high quality

  • 5
    Bolt carrier group

    This is the only BCG I will use. It has never let me down.

  • 5
    The absolute standard

    The dedication to perfection in crafting a BCM bolt is matched by no one in the industry. If you aren't running a BCM bolt in your rifle then you aren't being serious about for whatever reason you use your rifle

  • 5
    bcm bcg

    This is the gold standard of bcg. When you are looking for a tough, all business bcg there is none better.

  • 4
    Worth Every Penny

    This BCG is very well known for quality and durability. The finish on this BGC allows for easy cleaning. I was able to wipe off the carbon with no problems. This product is often used to measure the quality of BCGs from other manufacturers it is that good. You won't be disappointed. Heck, go get yourself two of these so you have a backup to that cheap BCG you bought with your AR!