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)
Wish 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

Rifle Parts Barrel Parts Rifle Barrels PROOF RESEARCH 300 AAC BLACKOUT 1-8 TWIST 16" CARBON FIBER BARREL Support

Experience unmatched performance with PROOF Research's 16" carbon fiber barrels, offering match-grade accuracy, lightweight design, and superior heat dissipation.

PROOF RESEARCH 300 AAC BLACKOUT 1-8 TWIST 16" CARBON FIBER BARREL

100018046

Filters:

Variations
Filters:
Variations:

Variations:

Experience unmatched performance with PROOF Research's 16" carbon fiber barrels, offering match-grade accuracy, lightweight design, and superior heat dissipation.
300 AAC BLACKOUT 1-8 TWIST 16" CARBON FIBER BARREL
1169.9 GBP 0 £1,169.90 *
Not available
Barrel Weight: 1.19 lbs Cartridge: 300 AAC Blackout Finish: Carbon Fiber Gas System Length: Carbine Length: 16'' Make: AR-15 Muzzle Threads: 5/8-24 Twist: 1-8'' Product no.: 100018046
Not available
1169.9 GBP 0 £1,169.90 *
-5 %
Experience unmatched performance with PROOF Research's 18" 308 Winchester carbon fiber barrel, offering match-grade accuracy, reduced vibration, and improved heat dissipation.
308 WINCHESTER 1-10 TWIST 18" CARBON FIBER BARREL
1119.9 GBP 1 £1,119.90 * £1,179.90 You save £60.00
In stock
Barrel Weight: 2.56 lbs Cartridge: 308 Winchester Finish: Carbon Fiber Gas System Length: Rifle Length: 18'' Make: AR .308 Muzzle Threads: 5/8-24 Twist: 1-10'' Product no.: 100018048
In stock
1119.9 GBP 1 £1,119.90 * £1,179.90
1119.9 1169.9 2 GBP
1169.9 GBP £1,169.90

Prices inclusive of duty & VAT.

Product no.: 100018046

Mfr. No.: 100561

Virtually impervious to weather, nicks, dings or scratches, and up to 30% lighter and 300% stiffer than equivalent weight steel AR barrels, PROOF Research’s carbon fiber-wrapped barrels open up new possibilities in AR performance. These carbon fiber-wrapped barrels provide a high-end alternative to traditional barrels while still maintaining extreme accuracy, performance and durability. Match-grade accuracy Improved heat dissipation for cooler and longer lasting barrels No point-of-impact shift during high-volume fire Reduced harmonic barrel vibration More about The Science behind there process here: #ItsScience NOTE: GAS BLOCK, GAS TUBE and BOLT NOT INCLUDED 308 Winchester barrel utilizes a .875” gas block and 300 AAC a .750” gas block
Not available
Be the first to rate this product

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
1119.9 1169.9 2 GBP
Description Specification Customers reviews Accessories

PROOF RESEARCH 300 AAC BLACKOUT 1-8 TWIST 16" CARBON FIBER BARREL

1169.9 GBP £1,169.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.
Requires order by phone

Description:

Revolutionise your shooting experience with PROOF Research carbon fiber barrels.

Virtually impervious to weather, nicks, dings or scratches, and up to 30% lighter and 300% stiffer than equivalent weight steel AR barrels, PROOF Research’s carbon fiber-wrapped barrels open up new possibilities in AR performance.

These carbon fiber-wrapped barrels provide a high-end alternative to traditional barrels while still maintaining extreme accuracy, performance and durability.

Key Features:

  • Match-grade accuracy
  • Improved heat dissipation for cooler and longer lasting barrels
  • No point-of-impact shift during high-volume fire
  • Reduced harmonic barrel vibration

More about The Science behind their process here.

NOTE: GAS BLOCK, GAS TUBE and BOLT NOT INCLUDED. The 308 Winchester barrel utilizes a .875” gas block and the 300 AAC a .750” gas block.



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. PROOF Research carbon fiber barrels are significantly lighter and stiffer than steel, enhancing AR performance with match-grade accuracy and improved heat dissipation.
  2. These barrels are designed to resist weather and damage, while reducing harmonic vibration and maintaining point-of-impact even during high-volume shooting.
  3. The 300 AAC Blackout barrel is 16 inches long with a 1-8 twist rate, but does not include a gas block, gas tube, or bolt.

Attributes

  • Barrel Weight: 
    1.19 lbs
  • Cartridge: 
    300 AAC Blackout
  • Contour: -
  • Finish: 
    Carbon Fiber
  • Gas System Length: 
    Carbine
  • Length: 
    16''
  • Muzzle Threads: 
    5/8-24
  • Twist: 
    1-8''
  • Weapon type: 
    AR-15
  • Delivery weight: 0.723kg
  • Shipping height: 32mm
  • Shipping width: 32mm
  • Shipping length: 419mm

Item details

Made in USA
US export classification: 0A501.c

Customers reviews

Customer ratings (0)

0 / 5

Variations:

Experience unmatched performance with PROOF Research's 16" carbon fiber barrels, offering match-grade accuracy, lightweight design, and superior heat dissipation.
300 AAC BLACKOUT 1-8 TWIST 16" CARBON FIBER BARREL
1169.9 GBP 0 £1,169.90 *
Not available
Barrel Weight: 1.19 lbs Cartridge: 300 AAC Blackout Finish: Carbon Fiber Gas System Length: Carbine Length: 16'' Make: AR-15 Muzzle Threads: 5/8-24 Twist: 1-8'' Product no.: 100018046
Not available
1169.9 GBP 0 £1,169.90 *
-5 %
Experience unmatched performance with PROOF Research's 18" 308 Winchester carbon fiber barrel, offering match-grade accuracy, reduced vibration, and improved heat dissipation.
308 WINCHESTER 1-10 TWIST 18" CARBON FIBER BARREL
1119.9 GBP 1 £1,119.90 * £1,179.90 You save £60.00
In stock
Barrel Weight: 2.56 lbs Cartridge: 308 Winchester Finish: Carbon Fiber Gas System Length: Rifle Length: 18'' Make: AR .308 Muzzle Threads: 5/8-24 Twist: 1-10'' Product no.: 100018048
In stock
1119.9 GBP 1 £1,119.90 * £1,179.90

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

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.

© 2026 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top