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
    Customer review

    Review body is empty

  • 5
    works as advertised

    BCM's auto BCG, like all of their products, works as advertised in my AR. I purposely chose this BCG because I've had flawless operation from my prior purchases. If you want reliability, BCM's products are worth every cent.

  • 5
    Great Product

    I received the BCG and have fired just over 1,000 rds with it so far. Works flawlessly so far. I'm happy to see yall actually test fire each one before you ship them.
    I have no complaints.
    However, what's with the packaging? I figured it would come in some sort of box instead of bubble wrap and a ziploc bag. Not an issue, I just had a good laugh over it.
    I love it, great product.

  • 5
    One of the best.

    One of the best if not the best BCG's on the market.

  • 5
    Smooth perfection

    Solid, well build piece. Machine work is excellent and everything was in spec for new components. Gas rings are a touch on the tight side but that's to be expected for new. I expect a long service life for this component.

  • 5
    BCG

    Great product

  • 5
    Best bolt carrier on the market

    I have 2 of these now and I can tell you from experience these bolt carriers are worth every penny. Charging the gun seems to be much smoother with these bolt carriers and they provide very consistent ejection. Don't cheap out like I did, buy these first and don't worry about it ever again.

  • 5
    KMR Hanguard, bolt carrier group, charging handle

    Very good service. High quality material and delivered promptly. Couldn’t be happier with my purchase

  • 5
    Bolt Carrier

    Arrived fast and in great condition works great