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
    Its BCM, enough said.

    Third build with BCM barrel and BCG. Won't use anything else.

  • 5
    Excellent quality

    You know you’re getting good quality when you buy anything BCM. This fits perfectly in my BCM upper and I figured I’d try it in my other 3 uppers and fit in them as well. Light weight and no hang up or excessive rub when charging by hand. Shoots great and packaged well. FAST SHIPPING! Ordered on a Wednesday @ 9pm with standard shipping and it came Saturday... what? When does that ever happen? BCM does it right

  • 5
    Customer review

    Review body is empty

  • 5
    Customer review

    Highest quality and dependability you could ask for. Will definitely purchase more BCM products in the future.

  • 5
    Bolt and Charging Handle

    Outstanding!!!!!
    I love these products. Put 1200 rounds down range on a two day training and only had two malfunctions, both failure to discharge which was a primer issue not the firing pin. Good Stuff!!

  • 5
    Bcg

    I have used many bcm products and they’re always top notch. This bcg is no different, excellent product.

  • 5
    Customer review

    great products and service. Quick response

  • 4
    BCM BCG

    The carrier had rough machining marks on the majority of itself, however the “bearing surfaces” were flawless, and the logo was ok. But, the bolt fit, gas key, and dimensions were so good that it slid in my well lubed BCM factory upper, as if it were a glass rod in a cylinder. The gray coating they put in the uppers is amazingly smooth when lubed. I give the whole works an 8 outta 10, mainly because the price point i paid was high compared to the chatty machinework. It functions FLaWLESSLY and ReLIABLY!!! And thats what counts. I would reccommend to anybody willing to send the coin on a sure thing.