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 FAXON FIREARMS DUTY 5.56X45 NATO 16" 1-8 TWIST PENCIL CONTOUR BBL NITRIDE Support

Faxon AR-15 5.56 Pencil Barrels offer lightweight design, durable 4150 CMV steel, QPC Nitride finish, and reliable M4 feedramps for optimal performance.
-10 %

FAXON FIREARMS DUTY 5.56X45 NATO 16" 1-8 TWIST PENCIL CONTOUR BBL NITRIDE

816341020146 100802008

Filters:

Variations
Filters:
Variations:

Variations:

-10 %
Faxon AR-15 5.56 Pencil Barrels offer lightweight design, durable 4150 CMV steel, QPC Nitride finish, and reliable M4 feedramps for optimal performance.
AR-15/M16 5.56 PENCIL BARRELS - DUTY 5.56X45 NATO 16" 1-8 TWIST PENCIL CONTOUR BBL NITRIDE
219.9 GBP 8 £219.90 * £244.90
In stock
Barrel Weight: 1.19 lbs Cartridge: 5.56 mm NATO Contour: Lightweight, Pencil Finish: QPQ Gas System Length: Mid-Length Length: 16'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-8 Product no.: 100802008
In stock
219.9 GBP 8 £219.90 * £244.90
-10 %
Faxon AR-15 5.56 Pencil Barrels are lightweight, durable 4150 CMV steel, with QPC Nitride finish, 1-8" twist, M4 feedramps, and low-profile gas block compatibility.
AR-15/M16 5.56 PENCIL BARRELS - DUTY 5.56X45 NATO 14.5" 1-8 TWIST PENCIL CONTOUR BBL NITRIDE
214.9 GBP 5 £214.90 * £239.90
In stock
Barrel Weight: 1 lbs Cartridge: 5.56 mm NATO Contour: Lightweight, Pencil Finish: QPQ Gas System Length: Mid-Length Length: 14.5'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-8 Product no.: 100802007
In stock
214.9 GBP 5 £214.90 * £239.90
The Faxon AR-15 5.56 Pencil Barrel is lightweight, durable, and features 1-8 twist rifling, M4 feedramps, and a QPC Nitride finish for longevity.
AR-15/M16 5.56 PENCIL BARRELS - DUTY 5.56X45 NATO 10.5" 1-8 TWIST PENCIL CONTOUR BBL NITRIDE
234.9 GBP 0 £234.90 *
Backorderable
Cartridge: 5.56 mm NATO Contour: Pencil Finish: Black Gas System Length: Carbine Length: 10.5'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-8 Product no.: 100026109
Backorderable
234.9 GBP 0 £234.90 *
Faxon AR-15 5.56 Pencil barrels offer lightweight construction, durable 4150 CMV steel, 1-8" twist for versatility, and M4 feedramps for reliable performance.
AR-15/M16 5.56 PENCIL BARRELS - DUTY 5.56X45 NATO 16" 1-8 TWIST PENCIL CONTOUR BBL FDE
329.9 GBP 0 £329.90 *
Not available
Cartridge: 5.56 mm NATO Contour: Pencil Finish: Flat Dark Earth Gas System Length: Mid-Length Length: 16'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-8 Product no.: 100033765
Not available
329.9 GBP 0 £329.90 *
214.9 329.9 4 GBP
-10 %
MSRP £244.90
219.9 GBP £219.90

Prices inclusive of duty & VAT.

Product no.: 100802008

Mfr. No.: 15A58M16NPQ

816341020146 Faxon AR-15 5.56 Pencil barrels have a narrow O.D. both fore and aft of the gas block, for maximum weight saving. AR-15 5.56 Pencil barrels are manufactured at Faxon’s ISO-certified facility from one of the hardest materials on the planet, 4150 CMV carbon steel, featuring a QPC black Nitride or FDE coating for superior wear-resistance and longevity. Models available for use with carbine- or mid-length gas tubes .625" O.D. at gas shoulder accept low-profile gas block 1” long or less Will not accept standard-length front sight block 1-8" twist rifling to stabilize the entire range of common loadings Muzzles have ½” x 28 threads All Faxon AR-15 5.56 Pencil barrel feature M4 feedramps for to aid in reliable chambering and extraction of round, and they must pass magnetic particle inspection to ensure consistent quality.
In stock 8 pcs. in the USA warehouse
4.8/5 - 4 Customers

Delivery time approx. 7-14 days.

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
214.9 329.9 4 GBP
Description Specification Customers reviews Accessories

FAXON FIREARMS DUTY 5.56X45 NATO 16" 1-8 TWIST PENCIL CONTOUR BBL NITRIDE

-10 %
MSRP £244.90
219.9 GBP £219.90

Prices inclusive of duty & VAT.

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

Description:

Discover the lightweight performance of Faxon AR-15 5.56 Pencil Barrels!

The Faxon AR-15 5.56 Pencil barrels are designed for those who prioritize weight savings without compromising on performance. With a narrow O.D. both fore and aft of the gas block, these barrels excel in lightweight applications.

Key Features:

  • Manufactured from 4150 CMV carbon steel at Faxon’s ISO-certified facility.
  • Available with a QPC black Nitride or FDE coating for enhanced wear resistance and longevity.
  • Compatible with carbine- or mid-length gas tubes.
  • .625" O.D. at gas shoulder accepts low-profile gas block of 1” long or less.
  • Not compatible with standard-length front sight block.
  • Features 1-8" twist rifling to stabilize a wide range of common loadings.
  • Muzzles are equipped with ½” x 28 threads.
  • All barrels feature M4 feedramps to aid in reliable chambering and extraction.
  • Each barrel must pass magnetic particle inspection to ensure consistent quality.

Upgrade your firearm with the precision-engineered Faxon AR-15 5.56 Pencil Barrels—the perfect choice for enthusiasts looking to enhance their shooting experience.



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. Faxon AR-15 5.56 Pencil barrels are designed for weight saving and are made from 4150 CMV carbon steel with a QPQ Nitride coating.
  2. The barrels have a .625" O.D. at the gas block, are compatible with mid-length gas tubes, and feature 1-8" twist rifling.
  3. Each barrel undergoes magnetic particle inspection for quality assurance and is equipped with M4 feed ramps for reliable chambering and extraction.

Attributes

  • Barrel Weight: 
    1.19 lbs
  • Cartridge: 
    5.56 mm NATO
  • Contour: 
    Lightweight
    , 
    Pencil
  • Finish: 
    QPQ
  • Gas System Length: 
    Mid-Length
  • Length: 
    16''
  • Muzzle Threads: 
    1/2-28
  • Twist: 
    1-8
  • Weapon type: 
    AR-15
  • Delivery weight: 0.549kg
  • Shipping height: 13mm
  • Shipping width: 13mm
  • Shipping length: 889mm
  • UPC: 816341020146

Item details

Made in USA
US export classification: 0A501.c

Customers reviews

Customer ratings (4)

4.8 / 5
Recommended

Brownells USA Buy with confidence 17/10/2016

I bought this for a light weigh build. I put a 15" Midwest Industries rail with Daniel Defense fixed irons. I put a clamp on Daniel Defense low profile gas block as well. All in a shade under 6 pounds. Barrel was broken in with Black Hills 69 grain match BTHP. First 100 rounds after break in (50 round break) it shot 1.5 - 2" groups. Not bad but wanted a little more. After 300 rounds of all 69 match it shoots 3/4 all day long.



I shoot 62 grain Gold Dot bonded now and it shoots flawless 3/4 inch groups. Shoots about everything in the 3/4 to 1.5 range. The barrel seems to do well with 62-77 grain.



Mine was very well made with flawless finish. My only complaint as it has been noted was the 1-8 marking on the barrel was cut leaving bare metal. It does rust if you don't watch it. This is a patrol rifle that spends many days in the trunk of a squad. Hot in summer bitter cold in the winter. Barrel shoots the same at 90 degrees or 0 degrees. After 2 or 3 times of getting rust out with steel wool I covered the markings with fingernail polish. No problems since.



Good barrel for a light weight gun at a good price. I have close to 3000 rounds through mine now and rifling still looks great. Many rounds left to go down the pipe

Definitely recommended

Brownells USA Lightweight 02/07/2016

This thing is definitely lightweight. If you have a bumpfire stock, it can bump fire 22's with some technique (minus optics w/CMMG 22 conv kit). It is also incredibly thin. I was worried that if I did not have a thin handguard it would look unbalanced.

This barrel is pretty precise at 25 yards with 22's (plenty good for squirrels) and handled .223 ammo without any worry. It will kick a little more than usual, but that is to be expected. For me that was encouraged.



















Variations:

-10 %
Faxon AR-15 5.56 Pencil Barrels offer lightweight design, durable 4150 CMV steel, QPC Nitride finish, and reliable M4 feedramps for optimal performance.
AR-15/M16 5.56 PENCIL BARRELS - DUTY 5.56X45 NATO 16" 1-8 TWIST PENCIL CONTOUR BBL NITRIDE
219.9 GBP 8 £219.90 * £244.90
In stock
Barrel Weight: 1.19 lbs Cartridge: 5.56 mm NATO Contour: Lightweight, Pencil Finish: QPQ Gas System Length: Mid-Length Length: 16'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-8 Product no.: 100802008
In stock
219.9 GBP 8 £219.90 * £244.90
-10 %
Faxon AR-15 5.56 Pencil Barrels are lightweight, durable 4150 CMV steel, with QPC Nitride finish, 1-8" twist, M4 feedramps, and low-profile gas block compatibility.
AR-15/M16 5.56 PENCIL BARRELS - DUTY 5.56X45 NATO 14.5" 1-8 TWIST PENCIL CONTOUR BBL NITRIDE
214.9 GBP 5 £214.90 * £239.90
In stock
Barrel Weight: 1 lbs Cartridge: 5.56 mm NATO Contour: Lightweight, Pencil Finish: QPQ Gas System Length: Mid-Length Length: 14.5'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-8 Product no.: 100802007
In stock
214.9 GBP 5 £214.90 * £239.90
The Faxon AR-15 5.56 Pencil Barrel is lightweight, durable, and features 1-8 twist rifling, M4 feedramps, and a QPC Nitride finish for longevity.
AR-15/M16 5.56 PENCIL BARRELS - DUTY 5.56X45 NATO 10.5" 1-8 TWIST PENCIL CONTOUR BBL NITRIDE
234.9 GBP 0 £234.90 *
Backorderable
Cartridge: 5.56 mm NATO Contour: Pencil Finish: Black Gas System Length: Carbine Length: 10.5'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-8 Product no.: 100026109
Backorderable
234.9 GBP 0 £234.90 *
Faxon AR-15 5.56 Pencil barrels offer lightweight construction, durable 4150 CMV steel, 1-8" twist for versatility, and M4 feedramps for reliable performance.
AR-15/M16 5.56 PENCIL BARRELS - DUTY 5.56X45 NATO 16" 1-8 TWIST PENCIL CONTOUR BBL FDE
329.9 GBP 0 £329.90 *
Not available
Cartridge: 5.56 mm NATO Contour: Pencil Finish: Flat Dark Earth Gas System Length: Mid-Length Length: 16'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-8 Product no.: 100033765
Not available
329.9 GBP 0 £329.90 *

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.

© 2025 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top