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
    Excellent machinig

    bought this BCM as a backup for my Colt AR15. The fit and finish are excellent.

  • 5
    Excellent Quality!

    What can I say? These are the best BCG's on the market. Better than LMT, Colt, better than anybody. They will make a decent rifle turn into a excellent rifle!

  • 5
    Quality Item, Great Price!

    I own 4 different AR15s (built 3) and this is the best BCG I've used yet. Everything is quality in the fit, finish, and function. First day at the range ran 300 rds through my DSA ZM4 upper without a problem. Various Ammo used...Wolf/Tula, PMC, Federal, Remington, and some old handloads. Nothing but 'bang' and solid extraction/ejection. I didn't use the supplied o-ring though. So far, don't need to, works well without that extra power. Wish I had bought one of these sooner. Next build, I'm coming back for another one. Highly recommend this product.

  • 5
    #1 service

    super fast shipping. got it in 3 days. works like a charm......

  • 5
    Shipping

    Very fast shipping, product looks legit haven't had a chance to install just yet. will check back in.

  • 5
    great kit!

    used this BCG on my A4 clone...the quality is the same if not better than mil BCGs thanks BCM!

  • 5
    Outstanding service

    Ordered this BCG on the 7th shipped on the 8th and got it on the 9th. Very fast Bravo Co. and part looks great.

  • 5
    very high qulity bolt and carrier

    runs like a champ

  • 5
    You will notice a difference!

    Upon inspection this thing is so clean on the machine work. HP/MP marked, could not find any burs or bad machine angles, runs like a top at the range. Super quality at a great price.