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

    Quality product, fast shipping,

  • 5
    BCM BCG

    I ordered my BCG with an upper for a separate rifle and it all shipped together relatively fast. As always, BCM is on top of customer service.

  • 5
    Excellent as always!

    BCM never ceases to amaze me. Absolute top quality beautifully made and finished bolt carrier group delivered before me credit card got cold! I know central Indiana is not far from their facility in Michigan, but shipping has always been crazy fast! Thanks again and more orders to come in the future!

  • 5
    Amazing

    The bolt carrier group from bravo is more than I expected. The look of the bcg is professional and shows great presentation. The actual function of the bolt holds that stigma given off with the look of the bravo bcg, which is smooth, precise, and all around great function and mechanically designed.

  • 5
    Solid BCG and Charging Handle

    Very pleased with the quality and finish of the BCG MPI. Shot over 100 rounds so far and still looks brand new. Will be buying again for my next build.

  • 5
    Bcm bcg

    Flawless,amazing product and works like a charm with no issues

  • 5
    Fixed my double feed issues

    I was having chronic double feed issues and had tried everything; changed ammo, changed magazines, changed gas system, changed extracter spring, changed buffer, changed buffer springs, but still happened. This new bolt carrier group from BCM did the trick. I'm 1000+ rounds in and not one malfunction. I don't know what you guys do, but you're products are clearly top notch .

  • 5
    Clean, with obvious attention to detail

    Picked this up for my latest build. Since this is the part that does the most important work I wanted something that would last and from people I trust. Did not disappoint!

  • 5
    So far, so good

    Have only shot the rifle twice but the bolt carrier and all of its components look great.