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 Gas System Parts Gas Blocks BROWNELLS AR-15 GAS BLOCK KIT MODULAR Support
Upgrade your AR-15 with the modular gas block kit! 🔧 Easy installation, durable aluminum, and customizable with Picatinny rails for accessories.

BROWNELLS AR-15 GAS BLOCK KIT MODULAR - BROWNELLS AR-15 MODULAR GAS BLOCK 0.750"

050806107755 080000382

Variations:

Upgrade your AR-15 with the modular gas block kit! 🔧 Easy installation, durable aluminum, and customizable with Picatinny rails for accessories.
BROWNELLS AR-15 MODULAR GAS BLOCK 0.750"
54.9 GBP 0 £54.90 *
Reordered - Is a 'Call to order' product.
Inside Diameter: .750 Make: AR-15 Material: Aluminum Style: Picatinny
Reordered - Is a 'Call to order' product.
54.9 GBP 0 £54.90 *
Ask question
Upgrade your AR-15 with the Brownells Gas Block Kit! 🔧 Modular design for easy customization with Picatinny rails for all your tactical needs.
BROWNELLS AR-15 MODULAR GAS BLOCK RAIL
19.9 GBP 3 £19.90 *
In stock
Make: AR-15 Material: Aluminum Model: AR-15 Style: Picatinny
In stock
19.9 GBP 3 £19.90 *
Ask question
Upgrade your AR-15 with the modular gas block kit! 🔧 Easy installation, durable aluminum, and customizable Picatinny rails for all your tactical needs.
BROWNELLS AR-15 MODULAR GAS BLOCK KIT 0.750 ALUMINUM BLACK
79.9 GBP 0 £79.90 *
Reordered - Is a 'Call to order' product.
Inside Diameter: .750 Make: AR-15 Material: Aluminum Style: Picatinny
Reordered - Is a 'Call to order' product.
79.9 GBP 0 £79.90 *
Ask question
19.9 79.9 3 GBP
54.9 GBP 0 £54.90

Prices inclusive of duty & VAT.

Product no.: 080000382

050806107755 Easy-to-install gas block features an integral fixed rail and a modular design that allows fast installation and removal of up to three, additional Picatinny rails for mounting lasers, lights, night vision optics, back-up sights, and a variety of other tactical accessories. Side and bottom rails attach easily with two screws, so you can configure the unit for each mission’s requirements. Precision-machined from rugged, 6061 billet aluminum for superior strength without weighing down your weapon. Mounts securely to barrel with three, hardened steel setscrews.
Reordered - Is a 'Call to order' product.
10

Backordered, delivery time approx. 4-12 weeks from the USA warehouse.

Is a 'Call to order' product.

Backordered, delivery time approx. 4-12 weeks from the USA warehouse.

Wish List Ask question
Requires order by phone

Variations:

Upgrade your AR-15 with the modular gas block kit! 🔧 Easy installation, durable aluminum, and customizable with Picatinny rails for accessories.
BROWNELLS AR-15 MODULAR GAS BLOCK 0.750"
54.9 GBP 0 £54.90 *
Reordered - Is a 'Call to order' product.
Inside Diameter: .750 Make: AR-15 Material: Aluminum Style: Picatinny
Reordered - Is a 'Call to order' product.
54.9 GBP 0 £54.90 *
Ask question
Upgrade your AR-15 with the Brownells Gas Block Kit! 🔧 Modular design for easy customization with Picatinny rails for all your tactical needs.
BROWNELLS AR-15 MODULAR GAS BLOCK RAIL
19.9 GBP 3 £19.90 *
In stock
Make: AR-15 Material: Aluminum Model: AR-15 Style: Picatinny
In stock
19.9 GBP 3 £19.90 *
Ask question
Upgrade your AR-15 with the modular gas block kit! 🔧 Easy installation, durable aluminum, and customizable Picatinny rails for all your tactical needs.
BROWNELLS AR-15 MODULAR GAS BLOCK KIT 0.750 ALUMINUM BLACK
79.9 GBP 0 £79.90 *
Reordered - Is a 'Call to order' product.
Inside Diameter: .750 Make: AR-15 Material: Aluminum Style: Picatinny
Reordered - Is a 'Call to order' product.
79.9 GBP 0 £79.90 *
Ask question

Description:

Unique, Modular Design For Ultimate Customization
Easy-to-install gas block features an integral fixed rail and a modular design that allows fast installation and removal of up to three, additional Picatinny rails for mounting lasers, lights, night vision optics, back-up sights, and a variety of other tactical accessories. Side and bottom rails attach easily with two screws, so you can configure the unit for each mission’s requirements. Precision-machined from rugged, 6061 billet aluminum for superior strength without weighing down your weapon. Mounts securely to barrel with three, hardened steel setscrews.

Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The BROWNELLS AR-15 Modular Gas Block Kit features an integral fixed rail and a modular design for easy attachment of up to three Picatinny rails.
  2. Constructed from 6061 billet aluminum for durability without adding significant weight to the weapon.
  3. Mounts to .750" diameter barrels with three hardened steel setscrews for a secure installation.

Attributes

  • Inside Diameter: .750
  • Make: AR-15
  • Material: Aluminum
  • Style: Picatinny
  • Delivery weight: 0.045kg
  • Shipping height: 30mm
  • Shipping width: 74mm
  • Shipping length: 130mm
  • UPC : 050806107755

Item details

Made in USA
US export classification: 0A501.x

Customers reviews

Customer ratings (10)

3.2 / 5
Definitely recommended

Brownells USA gas block - Bayonet Lug. 28/02/2017

we got in the gas block - bayonet lug. went on great - fast, with a AR 15 roll pin starter. add 2 small drops of blue lock tight on all 2 or 4 Alin screws, to be safe!



Slightly recommend

Brownells USA Great design, terrible material choice 21/02/2016

I purchased this kit for an upper build I was doing as a gift for a friend. The design is fantastic in its versatility but the choice of a low grade and strength aluminum (6061 or 2024) as the manufacturing material was wrong considering the limited length of threaded holes for both clamping to the barrel and attaching the picatinny rail sections. Both the clamping set screws and the screws for attaching rail sections stripped out without any effort and upon examining the screws for the rail sections the screws were only holding on 1-1/2 to 2 complete turns of the thread. Standard manufacturing practice is that when putting a screw into aluminum of any grade you must go twice the diameter of the screw in number of threads to properly hold.



As previously stated this is a fantastic design but would be better off if manufactured out of steel or titanium.

Customers also bought

Enhance your AR-15 with the Modular Gas Block Lug! 🔧 Easily attach bayonets or bipods and customize your rifle for any mission.
BROWNELLS
BROWNELLS AR-15 MODULAR GAS BLOCK LUG
MODULAR GAS BLOCK LUG
 
4.5
In stock
£33.90
Transform your Ruger 10/22® with the adjustable Archangel stock! ✨ Enjoy enhanced versatility and a sleek desert tan design.
PRO MAG
PRO MAG RUGER 10/22 ARCHANGEL STOCK ADJ POLYMER DESERT TAN
RUGER 10/22 ARCHANGEL STOCK ADJUSTABLE
Rifle Stocks
2.5
In stock
£254.90
Unlock your AR-15's potential with the Brownells Armorer's Wrench 🔧. Perfect for easy installation and removal of barrel nuts and receiver extensions.
BROWNELLS
BROWNELLS AR-15 ARMORER'S WRENCH
AR-15 ARMORER'S WRENCH
Wrenches
3.6
In stock
£59.90
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