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 Receivers Upper Receivers BROWNELLS BRN-15 5.56MM 16" BBL .625" GAS BLOCK UPPER RECEIVER Support

The BRN-15 Upper Receiver features a 5.56 NATO barrel, MLOK handguard, and forged Mil-Spec construction, perfect for your next firearm build.

BROWNELLS BRN-15 5.56MM 16" BBL .625" GAS BLOCK UPPER RECEIVER

050806000230 430105079

Filters:

Variations
Filters:
Variations:

Variations:

The BRN-15 Upper Receiver features a 5.56 NATO barrel, MLOK handguard, and forged Mil-Spec construction, perfect for your next firearm build.
BRN-15 5.56MM 16" BBL .625" GAS BLOCK UPPER RECEIVER
444.35 GBP 0 £444.35 *
Not available
Cartridge: 5.56 x 45 Color: Black Contour: Lightweight Finish: Anodized Length: 16'' Make: AR-15 Muzzle: 1/2-28 Style: Assembled Twist: 1-7 Product no.: 430105079
Not available
444.35 GBP 0 £444.35 *
The BRN-15 Upper Receiver features a 5.56 NATO barrel, MLOK handguard, and forged construction, perfect for your next custom build.
BRN-15 5.56MM 16" BBL .750" GAS BLOCK UPPER RECEIVER
444.35 GBP 0 £444.35 *
Not available
Cartridge: 5.56 x 45 Color: Black Contour: Government Finish: Anodized Length: 16'' Make: AR-15 Muzzle: 1/2-28 Style: Assembled Twist: 1-7 Product no.: 430105078
Not available
444.35 GBP 0 £444.35 *
The BRN-15 Upper Receiver features a durable 5.56 NATO barrel, MLOK handguard, and Mil-Spec construction, perfect for your next custom build.
BRN-15 5.56MM 13.7" BBL .750" GAS BLOCK UPPER RECEIVER
422.14 GBP 0 £422.14 *
Not available
Cartridge: 5.56 x 45 Color: Black Contour: Government Finish: Anodized Length: 13.7'' Make: AR-15 Muzzle: 1/2-28 Style: Assembled Twist: 1-7 Product no.: 430105080
Not available
422.14 GBP 0 £422.14 *
The BRN-15 Upper Receiver features a 5.56 NATO barrel, MLOK handguard, and Mil-Spec construction, perfect for your next firearm build.
BRN-15 5.56MM 11.5" BBL .750" GAS BLOCK UPPER RECEIVER
414.77 GBP 0 £414.77 *
Not available
Cartridge: 5.56 x 45 Color: Black Contour: Government Finish: Anodized Length: 11.5'' Make: AR-15 Muzzle: 1/2-28 Style: Assembled Twist: 1-7 Product no.: 430105081
Not available
414.77 GBP 0 £414.77 *
414.77 444.35 4 GBP
444.35 GBP £444.35

Prices inclusive of duty & VAT.

Product no.: 430105079

Mfr. No.: 4027-3410-B2

050806000230 Manufactured in the US with the highest quality components, the BRN-15 Upper Receiver Groups are great starts for your next build. Pick your preferred bolt carrier group and charging handle to complete. The BRN-15 Upper Receiver Groups feature a 5.56x45mm NATO chambered, nitride finished barrel, available in several popular lengths. Models are available in a Government, medium profile barrel, with the 16 inch also available in a lightweight contour. Barrels feature a gas block dimple, that the rear gas block screw securely engages. All barrels are stress releived. Unique MLOK handguard extends past the gas block, to provide as much usable real estate as possible. Anti-rotation tabs at the rear of the handguard engage the upper receiver, preventing any cant in relation to the receiver picatinny rail. Large dual screws clamp and pass through the properly torqued barrel nut to ensure the handguard will not slip forward. Large vents are placed towards the rear, to allow both the barrel and handguard to cool more rapidly. Forged Mil-Spec type upper receiver features M4 feed ramps, ejection port cover and forward assist. Forward assist pin is knurled at the front, to ease future swaps. 4150 CMV (Chrome Moly Vanadium) Barrel Chambered in 5.56x45mm NATO 1-7 Barrel Twist 1/2-28 Muzzle Threads A2 Flash Hider Forged 7075-T6 Upper Receivers Hardcoat Anodized Upper Receiver M4 Feedramps in Upper & Barrel Extension Barrels are marked "5.56 NATO 1:7 4150CMV SR" 100% American Made Please note, the 16 inch lightweight features a lock nut on the muzzle device. To remove, secure the lock nut with a wrench, turn towards the rear, and unscrew the flash hider. Does not come with bolt carrier group or charging handle. All NFA Rules Apply.
Not available
Be the first to rate this product

Not available.

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
414.77 444.35 4 GBP
Description Specification Customers reviews Accessories

BROWNELLS BRN-15 5.56MM 16" BBL .625" GAS BLOCK UPPER RECEIVER

444.35 GBP £444.35

Prices inclusive of duty & VAT.

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

Description:

Discover the BRN-15 Upper Receiver for your next build!

Manufactured in the US with the highest quality components, the BRN-15 Upper Receiver Groups are great starts for your next build. Pick your preferred bolt carrier group and charging handle to complete your assembly.

Key Features:

  • Caliber: Chambered in 5.56x45mm NATO
  • Barrel: Nitride finished barrel available in several popular lengths
  • Profile: Government and medium profile barrel, with a lightweight contour option for the 16 inch
  • Gas Block: Features a gas block dimple for secure engagement
  • Handguard: Unique MLOK handguard extends past the gas block for maximum usable real estate
  • Anti-Rotation Tabs: Engage the upper receiver to prevent cant in relation to the picatinny rail
  • Cooling: Large vents allow both the barrel and handguard to cool more rapidly
  • Forged Mil-Spec Upper Receiver: Includes M4 feed ramps, ejection port cover, and forward assist
  • Material: 4150 CMV (Chrome Moly Vanadium) Barrel
  • Twist Rate: 1-7 Barrel Twist
  • Muzzle Threads: 1/2-28
  • Flash Hider: A2 Flash Hider
  • Finish: Hardcoat Anodized Upper Receiver
  • Markings: Barrels are marked "5.56 NATO 1:7 4150CMV SR"
  • Made in the USA: 100% American Made

Please note, the 16 inch lightweight features a lock nut on the muzzle device. To remove, secure the lock nut with a wrench, turn towards the rear, and unscrew the flash hider.

Does not come with bolt carrier group or charging handle. All NFA Rules Apply.



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The BRN-15 Upper Receiver Assembly is a high-quality, American-made component for AR-15 builds, featuring a 5.56 NATO chambered, nitride finished barrel with a 1-7 twist rate.
  2. It includes a unique MLOK handguard that extends past the gas block, anti-rotation tabs, and large vents for cooling, but does not come with a bolt carrier group or charging handle.
  3. The upper receiver is forged from 7075-T6 aluminum, hardcoat anodized, and equipped with M4 feed ramps, an ejection port cover, and a forward assist with a knurled pin for easy swaps.

Attributes

  • Cartridge: 
    5.56 x 45
  • Colour: 
    Black
  • Contour: 
    Lightweight
  • Finish: 
    Anodized
  • Length: 
    16''
  • Muzzle: 
    1/2-28
  • Style: 
    Assembled
  • Twist: 
    1-7
  • Weapon type: 
    AR-15
  • Delivery weight: 1.769kg
  • Shipping height: 89mm
  • Shipping width: 89mm
  • Shipping length: 711mm
  • UPC: 050806000230

Item details

Made in USA
US export classification: I(g)

Customers reviews

Customer ratings (0)

0 / 5

Variations:

The BRN-15 Upper Receiver features a 5.56 NATO barrel, MLOK handguard, and forged Mil-Spec construction, perfect for your next firearm build.
BRN-15 5.56MM 16" BBL .625" GAS BLOCK UPPER RECEIVER
444.35 GBP 0 £444.35 *
Not available
Cartridge: 5.56 x 45 Color: Black Contour: Lightweight Finish: Anodized Length: 16'' Make: AR-15 Muzzle: 1/2-28 Style: Assembled Twist: 1-7 Product no.: 430105079
Not available
444.35 GBP 0 £444.35 *
The BRN-15 Upper Receiver features a 5.56 NATO barrel, MLOK handguard, and forged construction, perfect for your next custom build.
BRN-15 5.56MM 16" BBL .750" GAS BLOCK UPPER RECEIVER
444.35 GBP 0 £444.35 *
Not available
Cartridge: 5.56 x 45 Color: Black Contour: Government Finish: Anodized Length: 16'' Make: AR-15 Muzzle: 1/2-28 Style: Assembled Twist: 1-7 Product no.: 430105078
Not available
444.35 GBP 0 £444.35 *
The BRN-15 Upper Receiver features a durable 5.56 NATO barrel, MLOK handguard, and Mil-Spec construction, perfect for your next custom build.
BRN-15 5.56MM 13.7" BBL .750" GAS BLOCK UPPER RECEIVER
422.14 GBP 0 £422.14 *
Not available
Cartridge: 5.56 x 45 Color: Black Contour: Government Finish: Anodized Length: 13.7'' Make: AR-15 Muzzle: 1/2-28 Style: Assembled Twist: 1-7 Product no.: 430105080
Not available
422.14 GBP 0 £422.14 *
The BRN-15 Upper Receiver features a 5.56 NATO barrel, MLOK handguard, and Mil-Spec construction, perfect for your next firearm build.
BRN-15 5.56MM 11.5" BBL .750" GAS BLOCK UPPER RECEIVER
414.77 GBP 0 £414.77 *
Not available
Cartridge: 5.56 x 45 Color: Black Contour: Government Finish: Anodized Length: 11.5'' Make: AR-15 Muzzle: 1/2-28 Style: Assembled Twist: 1-7 Product no.: 430105081
Not available
414.77 GBP 0 £414.77 *

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.
Classical viewClassical view Mobile viewMobile view

 

 

This site is operated by Brownells (UK) Limited


Brownells is a registered trademark of Brownells Incorporated and is used under license by Brownells (UK) Limited and independent distributor in United Kingdom from Brownells Incorporated.

 

 

 

Back to top