My Account (Sign in)
Your basket is empty.
0
Basket
Help and contact
Free standard delivery over £199
100-day return policy
Brownells UK - World's Largest Supplier of Gun Parts, Gunsmith Tools & Shooting Accessories United Kingdom
My Account (Sign in)
Shopping list
(0)
Basket
Newsletter Newsletter
Sale
Home Rifle Parts Receiver Parts Receivers Upper Receivers BROWNELLS BRN-4 ASSEMBLED UPPER RECEIVERS

BROWNELLS
BRN-4 ASSEMBLED UPPER RECEIVERS

Be the first to rate this product
050806500617 430104762
Assembled from All New Components – Fits Standard AR-15 Lowers The BRN-4 Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HK® 416 compatible handguard and any 1/2-28 muzzle device, and you’re ready to hit the range! Built from the ground up, the core of the BRN-4 Upper Receiver is an all new Bolt Carrier Group, featuring a slick nitride finish. The new BRN-4 barrel, produced by Faxon, is available in a variety of profiles and lengths to suit your needs. Barrels are chambered 5.56x45mm NATO, are button rifled with a 1-7 twist, 1/2-28 muzzle and come with the appropriate gas block for a given barrel length. Gas blocks are vented forward, to reduce gas sent rearward into the system. Barrels are available in a medium or heavy profile. The heavy profile ensures a rigid and robust platform for precision shooting. The medium profile balances the desire to have a lighter piston configuration, while still having plenty of barrel material to prevent drifting of grouping as the barrel heats. The upper receiver utilized in this assembly is made completely new, from billet, to mirror the profiles commonly found on forged upper receivers. The impressively machined upper is finished with matte black hard coat anodizing. The proper piston bushing is installed to eliminate any piston wear on the aluminum part. The BRN-4 features much longer barrel nut threads, engaging the barrel extension over a much larger surface area than a standard AR-15. This ensure that the barrel is rigidly mounted with the pre-installed barrel nut. Upper accepts any aftermarket AR-15 charging handle, forward assist or ejection port cover. Handguard installation is extremely simple, just slide handguard over the barrel and tighten one bolt. Be sure to follow any specific instructions advised by the manufacturer. Muzzle devices installation is also straightforward, as the barrel is 1/2-28 and the BRN-4 upper is compatible with common upper receiver “rods” and jigs. Any AR-15 1/2-28 muzzle device will be compatible. ALL NFA RULES APPLY.
More...
1209.9 1209.9 1 GBP
Product no.: 430104762
BROWNELLS BRN-4 14.5" ASSEMBLED UPPER RECEIVER MEDIUM BARREL
Mfr Part: BRN-4-14.5-UPPE 050806500617 Assembled from All New Components – Fits Standard AR-15 Lowers The BRN-4 Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HK® 416 compatible handguard and any 1/2-28 muzzle device, and you’re ready to hit the range! Built from the ground up, the core of the BRN-4 Upper Receiver is an all new Bolt Carrier Group, featuring a slick nitride finish. The new BRN-4 barrel, produced by Faxon, is available in a variety of profiles and lengths to suit your needs. Barrels are chambered 5.56x45mm NATO, are button rifled with a 1-7 twist, 1/2-28 muzzle and come with the appropriate gas block for a given barrel length. Gas blocks are vented forward, to reduce gas sent rearward into the system. Barrels are available in a medium or heavy profile. The heavy profile ensures a rigid and robust platform for precision shooting. The medium profile balances the desire to have a lighter piston configuration, while still having plenty of barrel material to prevent drifting of grouping as the barrel heats. The upper receiver utilized in this assembly is made completely new, from billet, to mirror the profiles commonly found on forged upper receivers. The impressively machined upper is finished with matte black hard coat anodizing. The proper piston bushing is installed to eliminate any piston wear on the aluminum part. The BRN-4 features much longer barrel nut threads, engaging the barrel extension over a much larger surface area than a standard AR-15. This ensure that the barrel is rigidly mounted with the pre-installed barrel nut. Upper accepts any aftermarket AR-15 charging handle, forward assist or ejection port cover. Handguard installation is extremely simple, just slide handguard over the barrel and tighten one bolt. Be sure to follow any specific instructions advised by the manufacturer. Muzzle devices installation is also straightforward, as the barrel is 1/2-28 and the BRN-4 upper is compatible with common upper receiver “rods” and jigs. Any AR-15 1/2-28 muzzle device will be compatible. ALL NFA RULES APPLY.
1209.9 GBP 5 £1,209.90 *
Is a 'Call to order' product.
Not available.
Specs: Cartridge: 5.56 x 45 Color: Black Contour: Medium Finish: Anodized Length: 14.5'' Make: Brownells Model: BRN-4 Muzzle: 1/2-28 Style: Assembled Twist: 1-7
Ask question

Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The BRN-4 Assembled Upper Receiver is compatible with standard AR-15 lowers, comes with a barrel and gas system installed, and requires an HK® 416 compatible handguard and a 1/2-28 muzzle device to complete assembly.
  2. It features a new, nitride-finished Bolt Carrier Group, a 5.56x45mm NATO chambered barrel by Faxon available in medium or heavy profiles, and a billet-made upper receiver with extended barrel nut threads for increased barrel rigidity.
  3. The upper receiver is designed for easy handguard installation with a single bolt and accepts any aftermarket AR-15 charging handle, forward assist, or ejection port cover, while also being compatible with all AR-15 1/2-28 muzzle devices.

Attributes

Cartridge: 5.56 x 45 Colour: Black Contour: Medium Finish: Anodized Length: 14.5'' Make: Brownells Model: BRN-4 Muzzle: 1/2-28 Style: Assembled Twist: 1-7 Delivery weight: 1.752kg

Item details

Made in USA
US export classification: I(g)



🔫 Upgrade your AR-15 with the BROWNELLS BRN-4 Assembled Upper Receiver! Medium 14.5" barrel, anodized finish, and 5.56 NATO chambered. Get started on your build today! 💥

Assembled from All New Components – Fits Standard AR-15 Lowers The BRN-4 Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HK® 416 compatible handguard and any 1/2-28 muzzle device, and you’re ready to hit the range! Built from the ground up, the core of the BRN-4 Upper Receiver is an all new Bolt Carrier Group, featuring a slick nitride finish. The new BRN-4 barrel, produced by Faxon, is available in a variety of profiles and lengths to suit your needs. Barrels are chambered 5.56x45mm NATO, are button rifled with a 1-7 twist, 1/2-28 muzzle and come with the appropriate gas block for a given barrel length. Gas blocks are vented forward, to reduce gas sent rearward into the system. Barrels are available in a medium or heavy profile. The heavy profile ensures a rigid and robust platform for precision shooting. The medium profile balances the desire to have a lighter piston configuration, while still having plenty of barrel material to prevent drifting of grouping as the barrel heats. The upper receiver utilized in this assembly is made completely new, from billet, to mirror the profiles commonly found on forged upper receivers. The impressively machined upper is finished with matte black hard coat anodizing. The proper piston bushing is installed to eliminate any piston wear on the aluminum part. The BRN-4 features much longer barrel nut threads, engaging the barrel extension over a much larger surface area than a standard AR-15. This ensure that the barrel is rigidly mounted with the pre-installed barrel nut. Upper accepts any aftermarket AR-15 charging handle, forward assist or ejection port cover. Handguard installation is extremely simple, just slide handguard over the barrel and tighten one bolt. Be sure to follow any specific instructions advised by the manufacturer. Muzzle devices installation is also straightforward, as the barrel is 1/2-28 and the BRN-4 upper is compatible with common upper receiver “rods” and jigs. Any AR-15 1/2-28 muzzle device will be compatible. ALL NFA RULES APPLY.
More...
Why order from us?
Unrivaled Product Selection

You want it? We got it!

Expert Customer Advice

Via Phone, Chat & Email

US Goods to your doorstep

No customs, no problems

100 days Returns

Shop with a peace of mind

Offers, Promotions & Exclusive Products

Through our weekly newsletter

Shamelessly Honest

We encourage critical product review

Fair Pricing

We pursue a sustainable pricing policy

We won't leave you stranded

Our entire team is made up of passionate gun enthusiasts

 

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.

© 2024 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical view Mobile view