Your basket is empty.

Basket

Help and contact

Free standard delivery over £199

100-day return policy

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

The CMMG 308 AR Bolt Carrier Group features heavy-duty 8620 steel construction, a phosphate finish, and chrome-lined interior, ensuring reliability and durability.

CMMG 308AR BOLT CARRIER GROUP MK3

815835012483 100013649

Restrictions

Is a 'Call to order' product.

Top takeaways

The 308 AR Bolt Carrier Group is designed for AR-style .308 rifles, featuring a carrier made of 8620 steel with a phosphate finish and a chrome-lined interior.
It includes a bolt made from 9310 hardened steel, an S7 tool steel extractor, and a stainless steel firing pin, all with phosphate finishes.
The gas key is properly torqued and staked, and the group comes with a cam pin and firing pin retaining pin, ready for immediate use without forward assist serrations.

Attributes

Cartridge:
```
308 Winchester
```
Finish:
```
Matte Black
```
Weapon type:
```
AR .308
```
Delivery weight: 0.544kg
Shipping height: 26mm
Shipping width: 38mm
Shipping length: 228mm
UPC: 815835012483

Item details

Made in USA
US export classification: I(g)

Specifications:
Cartridge: 308 Winchester
Finish: Matte Black
Make: AR .308

384.9 384.9 1 GBP

384.9 GBP £384.90

Prices inclusive of duty & VAT.

Product no.: 100013649

Mfr. No.: 38BA423

815835012483 Complete bolt/carrier group is ready to drop into your AR-style .308 rifle and run hard. Machined of 8620 steel, carrier has a durable phosphate finish and chrome lined interior. Carrier does not have serrations for a forward assist. Bolt is machined from 9310 hardened steel with an extractor of hardened S7 tool steel and a phosphate finish. Gas key has been torqued to spec and properly staked. Firing pin is machined from stainless steel. Group also includes cam pin and firing pin retaining pin.

Not available

Not available.

100-Day Return Policy

No charges until we ship

No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.

Wish List Ask question

order by phone

384.9 384.9 1 GBP

Description Specification Customers reviews Accessories

CMMG 308AR BOLT CARRIER GROUP MK3

384.9 GBP £384.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.

Requires order by phone

Description:

Upgrade your .308 rifle with the CMMG 308 AR Bolt Carrier Group!

The CMMG 308AR Bolt Carrier Group MK3 is designed for serious shooters who demand reliability and performance. This complete bolt/carrier group is ready to drop into your AR-style .308 rifle and run hard, making it an essential upgrade for any firearm enthusiast.

Durable Construction

Machined from 8620 steel, the carrier features a durable phosphate finish and a chrome lined interior for enhanced longevity and performance. Please note that this carrier does not have serrations for a forward assist.

High-Quality Bolt

The bolt is crafted from 9310 hardened steel, ensuring strength and durability under pressure. It is equipped with an extractor made of hardened S7 tool steel, also finished in phosphate for added resilience.

Reliable Components

Gas Key: Properly torqued to spec and staked for reliability.
Firing Pin: Made from stainless steel for corrosion resistance.
Included Parts: Cam pin and firing pin retaining pin.

Specifications

Carrier: 8620 steel, chrome lined, phosphate finish, matte black.
Bolt: 9310 steel, phosphate finish.
Extractor: S7 tool steel, phosphate finish.
Firing Pin: Stainless steel.

Elevate your shooting experience with the CMMG 308AR Bolt Carrier Group MK3. Perfect for both seasoned professionals and hobbyists alike!

Restrictions

Is a 'Call to order' product.

Top takeaways

The 308 AR Bolt Carrier Group is designed for AR-style .308 rifles, featuring a carrier made of 8620 steel with a phosphate finish and a chrome-lined interior.
It includes a bolt made from 9310 hardened steel, an S7 tool steel extractor, and a stainless steel firing pin, all with phosphate finishes.
The gas key is properly torqued and staked, and the group comes with a cam pin and firing pin retaining pin, ready for immediate use without forward assist serrations.

Attributes

Cartridge:
```
308 Winchester
```
Finish:
```
Matte Black
```
Weapon type:
```
AR .308
```
Delivery weight: 0.544kg
Shipping height: 26mm
Shipping width: 38mm
Shipping length: 228mm
UPC: 815835012483

Item details

Made in USA
US export classification: I(g)

Customers reviews

Customer ratings (1)

4 / 5

Recommended

Glad I spent the money 27/02/2014

I recently completed a 308 build and this is the bolt I chose. I made the right choice. Solid, well made, 1st rate materials throughout. Locks up tight with no rattles anywhere. Feeds and ejects flawlessy so far

Customers also bought

Crafted from 7075 T6 aluminum, this AR-308 receiver set features easy installation, compatibility with DPMS parts, and a sleek hardcoat anodized finish.

CROSS MACHINE TOOL CO.

AR-308 BILLET RECEIVER SET

Lower Receivers

Not available

£679.90

LUTH-AR

AR-308 CARBINE BUFFER

Backorderable

£59.90

-9 %

+ 2 variants

DAVID TUBB

AR-15 STAINLESS STEEL BUFFER SPRING
AR-15/CAR-15/ 308 AR STAINLESS STEEL SPRINGS

3.8

In stock

£54.90

£49.90 £49.90 - 54.90

(Select Items on Sale!)

.458 SOCOM billet upper receiver features an enlarged ejection port, integral Picatinny rail, and a slick-side design for a simplified build on standard lowers.

CROSS MACHINE TOOL CO.

AR-15/M16 BILLET UPPER RECEIVER, .458 SOCOM

Upper Receivers

Not available

£174.90

Oops! Something went wrong.

We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.

Site Navigation

Product Categories

Ordering

Customer Service

Connect

Secure payment methods

Trade Associations

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.