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 as expected

    was surprised to find the bcg on sale. top quality gear .

  • 4
    Wish

    I wish I could of gotten a military discount, I sent a email asking if you guys would and never got a response... Things I bought were awesome

  • 5
    Lw ar build

    Excellent quality , couldn't be happier, the chrome lined gas carrier and bolt carrier is an extra plus not found on my Colt guns !

  • 5
    BCM Bolt carrier Group

    If you want beyond Mil spec BCM is the way to go, their bolt carrier group is top of the line just what I was looking for as is all their products. I love these guys, Fast shipping , awesome customer service BCM

  • 5
    OUTFUCKINGSTANDING GENTS

    Functions flawlessly in Aero precisions M4E1 enhanced upper with Axis Raptor and JP Silent captured buffer. No fte yet using brass 5.56 or .223 loads. Ejects consistently.
    Quick shipping, and this review request came after my order arrived with enough time to actually test/use the product. 5 stars for the product and 10 for the company

  • 5
    Great BCG!

    looks great and feels great, fits as expected!

  • 5
    amazing

    Just get it.

  • 5
    excellent

    top quality product and fast shipping.

  • 5
    Awesome BCG.

    This BCG works extremely well and the BCM logo is an eye catcher. I put 180 rounds through it so far with no problems. This was my first AR I've ever made and shot actually. And I'm certainly not dissapointed.