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.***

Videos Hide Videos Show Videos

1247 Reviews

  • 5
    Bolt carrier group

    Very nice product very well made and good looking. Just finished my build and shot it for the first time worked very well.

  • 5
    Amazing Bolt Carrier

    Best fit and finish on a bolt carrier I’ve bought. Very pleased, functions flawlessly

  • 5
    Excellent BCG

    I recently ordered a BCG from BCM. This is one solid BCG. I was running a S&W M&P before putting this BCM build together and I have to say the quality difference is noticeable just by looking at them, and the S&W is a good rifle. I’ll put it this way, a friend of mine that works at a reputable gun store told me he would upgrade his Daniel Defense with BCM parts. That’s how nice and solid they are. I couldnt see any tooling marks at all, they are smooth as butter. I would recommend this company to anyone looking for quality products.

  • 5
    Top quality BCG

    I purchased this BCG along with a matching BCM upper for my first-ever AR build in 300 Blk, and I couldn't be happier with its performance. Smooth operation, solid extraction, and no signs of premature wear. If you are looking for a reliable BCG for your build, look no further. I will only buy BCM bolts for my guns from now on.

  • 2
    Used parts

    I thought I was paying 189$ + tax for a brand new bcg, but I guess not! Stripped it down to clean it and the cam pin and bolt assembly looked like used parts

  • 5
    Bolt carrier group

    The best BCG on the market on both civilian and military sides.

  • 5
    Best bolt carrier group.

    Best and very nice bolt carrier group. BCM Rock.

  • 5
    Bcg

    Awesome

  • 5
    Excellent

    As advertised, runs great and intend to use these in all my builds. The beating heart of your rifle should be BCM.