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 Receiver Parts Buffer Tube Parts Buffer Tubes STRIKE INDUSTRIES ADVANCED RECEIVER EXTENSION BUFFER TUBE BLACK Support

Upgrade your AR with the Strike Industries Advanced Receiver Extension Buffer Tube, featuring 7075-T6 aluminum, reduced friction, and enhanced functionality.
-12 %

STRIKE INDUSTRIES ADVANCED RECEIVER EXTENSION BUFFER TUBE BLACK

708747546118 100037227
Variations
Filters:
Variations:

Variations:

-12 %
Upgrade your AR with the Strike Industries Advanced Receiver Extension Buffer Tube, featuring 7075-T6 aluminum, reduced friction, and enhanced functionality.
ADVANCED RECEIVER EXTENSION BUFFER TUBE - ADVANCED RECEIVER EXTENSION BUFFER TUBE BLACK
74.9 GBP 2 £74.90 * £84.90
In stock
Make: AR-15 Style: Extension Product no.: 100037227
In stock
74.9 GBP 2 £74.90 * £84.90
Upgrade your AR15/AR10 with the Strike Industries Advanced Receiver Extension Buffer Tube, featuring 7075-T6 aluminum, reduced friction, and enhanced functionality.
ADVANCED RECEIVER EXTENSION BUFFER TUBE - ADVANCED RECEIVER EXTENSION BUFFER TUBE FDE
84.9 GBP 0 £84.90 *
Backorderable
Make: AR-15 Style: Extension Product no.: 100037229
Backorderable
84.9 GBP 0 £84.90 *
74.9 84.9 2 GBP
-12 %
MSRP £84.90
74.9 GBP £74.90

Prices inclusive of duty & VAT.

Product no.: 100037227

Mfr. No.: SI-AR-ARE-T7-BK

708747546118 The Strike Industries Advanced Receiver extension brings an updated aesthetic and increased functionality to an often neglected, yet highly important component of the AR15/AR10 weapon system. The scalloped surfaces decrease friction with tight fitting stocks, and shaves weight while retaining mass in critical stressed areas. Further enhancements include a supported buffer retaining tab that also serves to more easily index your receiver extension. The SI Advanced receiver extension is machined from 7075-T6 aluminum for much greater strength than your standard 6061 tubes. Upgrade your AR and stand out from the pack with the SI Advanced Buffer Tube.
In stock 2 pcs. in the USA warehouse
Be the first to rate this product
1
2
3
4
5
6
7
8
9
10+
-12 %
MSRP £84.90
£74.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Delivery time approx. 7-14 days.

100-Day Return Policy

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.
  • Enhanced strength with 7075-T6
  • Reduced friction with scalloped design
  • Lightweight yet durable construction
Wish List Ask question
74.9 84.9 2 GBP
Description Specification Customers reviews Accessories

STRIKE INDUSTRIES ADVANCED RECEIVER EXTENSION BUFFER TUBE BLACK

-12 %
MSRP £84.90
74.9 GBP £74.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+
-12 %
MSRP £84.90
£74.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Delivery time approx. 7-14 days.

100-Day Return Policy

Description:

Enhance Your AR Experience with the SI Advanced Receiver Extension Buffer Tube

The Strike Industries Advanced Receiver Extension Buffer Tube is designed to elevate both the aesthetics and functionality of your AR15/AR10 weapon system. This essential component is often overlooked, yet it plays a crucial role in performance.

Key Features:

  • Scalloped Surfaces: Reduces friction with tightly fitting stocks, enhancing overall performance.
  • Weight Savings: Engineered to shave off unnecessary weight while maintaining mass in critical stressed areas.
  • Supported Buffer Retaining Tab: Facilitates easier indexing of your receiver extension.
  • Superior Material: Crafted from 7075-T6 aluminum, offering significantly greater strength compared to standard 6061 tubes.

Upgrade your AR and distinguish yourself from the crowd with the SI Advanced Buffer Tube. This component not only enhances the look of your firearm but also improves its functionality, making it a must-have for any serious enthusiast.



Attributes

  • Style: 
    Extension
  • Weapon type: 
    AR-15
  • Delivery weight: 0.128kg
  • Shipping height: 51mm
  • Shipping width: 51mm
  • Shipping length: 229mm
  • UPC: 708747546118

Item details

US export classification: 0A501.y.1

Customers reviews

Customer ratings (0)

0 / 5

Variations:

-12 %
Upgrade your AR with the Strike Industries Advanced Receiver Extension Buffer Tube, featuring 7075-T6 aluminum, reduced friction, and enhanced functionality.
ADVANCED RECEIVER EXTENSION BUFFER TUBE - ADVANCED RECEIVER EXTENSION BUFFER TUBE BLACK
74.9 GBP 2 £74.90 * £84.90
In stock
Make: AR-15 Style: Extension Product no.: 100037227
In stock
74.9 GBP 2 £74.90 * £84.90
Upgrade your AR15/AR10 with the Strike Industries Advanced Receiver Extension Buffer Tube, featuring 7075-T6 aluminum, reduced friction, and enhanced functionality.
ADVANCED RECEIVER EXTENSION BUFFER TUBE - ADVANCED RECEIVER EXTENSION BUFFER TUBE FDE
84.9 GBP 0 £84.90 *
Backorderable
Make: AR-15 Style: Extension Product no.: 100037229
Backorderable
84.9 GBP 0 £84.90 *

Customers also bought

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