My Account (Sign in)
Your basket is empty.
0
Basket
contact us by phone Help and contact
Free standard delivery over £199
100-day return policy
My Account (Sign in)
Shopping list
Your basket is empty. (0)
Basket
Newsletter Newsletter
Sale

Over 300,000 customers - we say thank you!

4.93/5 "Very good" (1400+ reviews)

40,000+ products for hunting and shooting sports

Home Rifle Parts Bolt Parts Bolt Carrier Groups BRAVO COMPANY M16 5.56 BOLT CARRIER GROUP Support
Upgrade your AR15 with the BCM M16 5.56 Bolt Carrier Group! 🔧 Fully assembled for reliability and performance. Perfect for enthusiasts!

BRAVO COMPANY M16 5.56 BOLT CARRIER GROUP - BRAVO COMPANY M16 BOLT CARRIER GROUP BLACK

812526020994 100020758

Variations:

Upgrade your AR15 with the BCM M16 5.56 Bolt Carrier Group! 🔧 Fully assembled for reliability and performance. Perfect for enthusiasts!
BRAVO COMPANY M16 BOLT CARRIER GROUP BLACK
289.9 GBP 618 £289.90 *
Not available - Is a 'Call to order' product.
Finish: Black
Not available - Is a 'Call to order' product.
289.9 GBP 618 £289.90 *
Ask question
Upgrade your AR15 with the BCM M16 Bolt Carrier Group in Flat Dark Earth. 🚀 Engineered for strength and reliability, it's HPT and MPI tested!
BRAVO COMPANY M16 BOLT CARRIER GROUP FDE
274.9 GBP 67 £274.90 *
Not available - Is a 'Call to order' product.
Finish: Flat Dark Earth
Not available - Is a 'Call to order' product.
274.9 GBP 67 £274.90 *
Ask question
274.9 289.9 2 GBP
289.9 GBP 618 £289.90

Prices inclusive of duty & VAT.

Product no.: 100020758

Mfr. No.: BCM-BCG-AUTO

812526020994 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 insure 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. The Flat Dark Earth version has the stripped carrier finished with an Ion Bond coating which lowers friction and allows for easier cleaning.
Not available - Is a 'Call to order' product.
4

Not available.

Is a 'Call to order' product.

Not available.

Wish List Ask question
Requires order by phone

Variations:

Upgrade your AR15 with the BCM M16 5.56 Bolt Carrier Group! 🔧 Fully assembled for reliability and performance. Perfect for enthusiasts!
BRAVO COMPANY M16 BOLT CARRIER GROUP BLACK
289.9 GBP 618 £289.90 *
Not available - Is a 'Call to order' product.
Finish: Black
Not available - Is a 'Call to order' product.
289.9 GBP 618 £289.90 *
Ask question
Upgrade your AR15 with the BCM M16 Bolt Carrier Group in Flat Dark Earth. 🚀 Engineered for strength and reliability, it's HPT and MPI tested!
BRAVO COMPANY M16 BOLT CARRIER GROUP FDE
274.9 GBP 67 £274.90 *
Not available - Is a 'Call to order' product.
Finish: Flat Dark Earth
Not available - Is a 'Call to order' product.
274.9 GBP 67 £274.90 *
Ask question

Description:

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 insure 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. The Flat Dark Earth version has the stripped carrier finished with an Ion Bond coating which lowers friction and allows for easier cleaning.

Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The BCM M16 BCG is fully assembled, parkerized, and chrome lined, meeting USGI specifications including a Mil-Spec gas key.
  2. Constructed with Mil-Spec Carpenter No. 158® steel, the bolt assembly is shot peened, includes upgraded extractor components, and is HPT and MPI tested.
  3. Compatible with AR15, M16, and M4 platforms, it supports cartridges like 223 Remington, 5.56 mm NATO, and 300 AAC Blackout.

Attributes

  • Cartridge: 223 Remington,5.56 mm NATO,300 AAC Blackout
  • Finish: Black
  • Make: M16
  • Delivery weight: 0.333kg
  • Shipping height: 25mm
  • Shipping width: 25mm
  • Shipping length: 191mm
  • UPC : 812526020994

Item details

Made in USA
US export classification: I(g)

Customers reviews

Customer ratings (4)

5 / 5
Definitely recommended

Brownells USA Heavy duty, well built BCG 27/08/2018

I got this for a .223 build where I used Aero Precision Upper & Lower. I grabbed a BCM charging handle & buffer tube assembly as well. The bolt is heavy duty & machined with tight tolerances. I didn't want to buy a bolt, carrier, extractor, etc. so this was my choice for a drop-in BCG. The bolt was tight when new and has worn in slightly with use. No heavy wear spots noticed after 1000 rounds fired and it cleans up nicely. I doubt it will ever break or wear out. Would consider another bolt if trying to build a low weight AR, but if that's not a concern this part is an excellent choice and will be worth the money spent.

Definitely recommended

Brownells USA Great BCG, substandard packaging 24/11/2017

BCM makes a 5-star product but shipping by Brownell's was disappointing. BCG received with thin styrofoam wrap around BCG then placed in a thin bubble envelope. I would expect a $169 BCG to be shipped in a box. I could imagine this product getting dropped on a concrete floor by a hurried postal worker. I guess free Edge shipping doesn't entitle one to a box.

Site Navigation
Product Categories
Ordering
Customer Service

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.

Brownells Norge - Komplett utvalg av ladeutstyr, våpendeler, kuler, hylser, kikkerter, optikk og luftvåpen Brownells Österreich - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Switzerland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Deutschland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells France - Le plus grand fournisseur d'Accessoires pour le tir, Pièces détachées & Outils d'Armurier Brownells Iberica - El mayor proveedor de accesorios para el Tiro, Piezas y herramientas del armero. Brownells Sverige - Världens största leverantör av Vapendelar, Vapensmide Verktyg & Skyttetillbehör Brownells Suomi Brownells Italia - Il negozio del più grande rivenditore di componenti e accessori per armi da tiro, difesa e caccia Brownells Polska - Największy na świecie dostawca części broni, narzędzi rusznikarskich & akcesoriów strzeleckich Brownells Česko - Největší světový dodavatel součástí zbraní, střeleckého příslušenství a zbrojního nářadí
*
Prices inclusive of duty & VAT.

© 2025 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top