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 Barrel Parts Rifle Barrel Hardware Barrel Extension Parts WHITWORTH TOOL AR-15 M4 BARREL EXTENSION Support
100004728
Fits Rifle Or Cabine Barrels; Ramped To Help Guide Rounds Into Chamber
Economical, high-quality M4 barrel extension is machined to mil-spec standards with integral feed ramps and predrilled locator pin hole for fast, easy barrel installations. Machined from 8620 steel and head-treated for additional surface hardness to resist erosion by hot combustion gases for years of reliable service. Great for custom barrel jobs and caliber conversions.

SPECS: 8620 steel, in-the-white. .8125"-16UNF thread. Barrel locator pin required, not included.

More...
35.9 35.9 1 GBP
Product no.: 100004728
WHITWORTH TOOL AR-15 M4 BARREL EXTENSION STEEL UNFINISHED
Mfr Part: BXM4 M4 Barrel Extension
35.9 GBP 0 £35.90 *
Backordered, delivery time approx. 4-12 weeks from the USA warehouse.
Specs: Color: Unfinished Make: AR-15 Material: Steel
Ask question

Description

M4 Barrel Extension

Attributes

Colour: Unfinished Make: AR-15 Material: Steel Delivery weight: 0.005kg Shipping height: 1mm Shipping width: 83mm Shipping length: 146mm

Item details

Made in USA
US export classification: 0A501.c




Upgrade your AR-15 with the M4 Barrel Extension from Whitworth Tool. Durable steel construction for reliable performance. 🔧 Order now!

Fits Rifle Or Cabine Barrels; Ramped To Help Guide Rounds Into Chamber
Economical, high-quality M4 barrel extension is machined to mil-spec standards with integral feed ramps and predrilled locator pin hole for fast, easy barrel installations. Machined from 8620 steel and head-treated for additional surface hardness to resist erosion by hot combustion gases for years of reliable service. Great for custom barrel jobs and caliber conversions.

SPECS: 8620 steel, in-the-white. .8125"-16UNF thread. Barrel locator pin required, not included.

More...
Upgrade your AR-15 with the ZRO DELTA Lower Parts Kit! 🔧 Enjoy a smoother trigger pull and enhanced performance for your firearm.
ZRO DELTA
ZRO DELTA AR-15 LPK NO TRIGGER GUARD OR GRIP
AR-15 LOWER PARTS KIT
 
4.1
In stock
£69.90 £69.90 - £79.90
Upgrade your AR-15 with the Midwest Industries Combat M-LOK Handguard! 🔧 Lightweight aluminum, customizable, and made in the USA.
MIDWEST INDUSTRIES
MIDWEST INDUSTRIES COMBAT HANDGUARD M-LOK ALUMINUM 10.5" BLACK
AR-15 COMBAT HANDGUARDS FREE FLOAT M-LOK
Handguards & Rails
5
Reordered
£239.90 £194.90 - £379.90
Upgrade your AR-15 with the durable Magpul MOE Grip. Enjoy a secure hold and comfort during firing! ✨ Perfect for enhanced performance.
MAGPUL
MAGPUL MOE GRIP POLYMER FOR AR-15/M4 BLACK
AR-15 MOE GRIP
Pistol Grips
4.5
In stock
£27.90
Upgrade your AR-15 with the Brownells Bolt Carrier Group 5.56 NATO 🔧. Reliable, durable, and ready for any build or spare needs!
BROWNELLS
BROWNELLS AR-15 BOLT CARRIER GROUP 5.56X45MM NITRIDE MP
AR15 BOLT CARRIER GROUP 5.56X45MM NITRIDE MP
Bolt Carrier Groups
0
In stock - Is a 'Call to order' product.
£159.90
Upgrade your AR-15 with Aero Precision's durable 5.56mm Charging Handles! 🛠️ Enjoy ambidextrous design and rugged 7075-T6 aluminum construction.
AERO PRECISION
AERO PRECISION AR-15 CHARGING HANDLE 5.56MM
AR-15 CHARGING HANDLES 5.56MM
Charging Handles
0
In stock
£41.90 £41.90 - £159.90
Site Navigation
Product Categories
Ordering
Customer Service

Connect

Secure payment methods

VisaMasterCardAmex 

Trade Associations

Trade member of the British Association for Shooting and ConservationGTAC.I.P.

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.

© 2024 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top