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
    BCM BCG

    Great quality. Runs perfect. BCM has some of the highest quality products as far as I'm concerned.

  • 5
    bcm bcg

    one of the best quality bolt carrier groups on the market. cannot beat it for the price and reliability!

  • 5
    Genuinely impressed.

    The BCG I purchased was exactly as described and with proper markings to document the claims made by BCM, and of amazing quality. I am definitely impressed by all aspects of the product.

    Shipping was also lightning fast. I ordered on a Friday had the BCG in hand the following Tuesday. That's three business days from "add to cart" to "add to rifle".

    Thank you BCM, I will absolutely be doing business with you again in the future. I would give six stars if I could.

  • 5
    Good Quality from good company

    Got my bolt carrier group yesterday. Was packaged very well and shipped fast. Opened the box and unwrapped it to find a very good product. No machine marks, good coating coverage, oiled so no rust possible. Pulled it apart to find good quality parts used to assemble it and plating inside very good and consistent. You won't find a better product or faster shipping. I haven't had to deal with customer service because with products like this there won't be any problems. LOL

  • 5
    AR Build

    I was told by several friends to not waste my time and money on other companies for ar parts...With that being said I'm glad I took their advice. I am very pleased with my first product from BCM and will continue to purchase more parts in the future.

  • 5
    bolt carrier

    satisfied

  • 5
    BCG

    Wonderful product!!!! Just came home from the shooting range and loved it

  • 5
    Bcm bcg

    Shipped extremely fast, great quality, I am using this on my first build I will not use anything else.

  • 5
    BCM BCG

    Shipped fast. Great customer service. Quality product. Buy it while supplies last.