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The BRN-4 Assembled Upper Receiver features a new Bolt Carrier Group, 5.56 NATO barrel, and easy installation for handguards and muzzle devices, perfect for AR-15 builds.

BROWNELLS BRN-4 ASSEMBLED UPPER RECEIVER 14.5" MEDIUM BARREL BLACK

050806500617 430104762

Restrictions

Is a 'Call to order' product.

Top takeaways

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.
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.
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''
```
Model:
```
BRN-4
```
Muzzle:
```
1/2-28
```
Style:
```
Assembled
```
Twist:
```
1-7
```
Weapon type:
```
Brownells
```
Delivery weight: 2.495kg
Shipping height: 127mm
Shipping width: 127mm
Shipping length: 800mm
UPC: 050806500617

Item details

Made in USA
US export classification: I(g)

Specifications:
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

1339.9 1339.9 1 GBP

1339.9 GBP £1,339.90

Prices inclusive of duty & VAT.

Product no.: 430104762

Mfr. No.: BRN-4-14.5-UPPER

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.

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1339.9 1339.9 1 GBP

Description Specification Customers reviews Accessories

BROWNELLS BRN-4 ASSEMBLED UPPER RECEIVER 14.5" MEDIUM BARREL BLACK

1339.9 GBP £1,339.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.

Requires order by phone

Description:

Discover the BRN-4 Assembled Upper Receiver – Your Next Upgrade Awaits!

The BRN-4 Assembled Upper Receiver from BROWNELLS is an exceptional choice for firearm enthusiasts looking to enhance their AR-15 platform. This upper receiver is designed to fit standard AR-15 lowers and comes fully assembled with a barrel and gas system already installed.

Key Features:

All New Components: Assembled from high-quality, new parts.
Barrel Options: Available with a 14.5" medium barrel, chambered in 5.56x45mm NATO, featuring a 1-7 twist rate.
Enhanced Bolt Carrier Group: Features a slick nitride finish for improved performance.
Gas Block Design: Vented forward to minimize gas blowback into the system.
Durable Construction: Made from billet to replicate the profiles of forged receivers, finished with a matte black hard coat anodizing.
Longer Barrel Nut Threads: Ensures a rigid mounting with a larger engagement surface area.
Compatibility: Accepts any aftermarket AR-15 charging handle, forward assist, or ejection port cover.

Installation is a breeze! Simply add your preferred HK® 416 compatible handguard and any 1/2-28 muzzle device to complete your setup. The handguard can be easily installed by sliding it over the barrel and tightening a single bolt. Ensure you follow the manufacturer's specific instructions for installation.

Whether you're looking for precision shooting or a reliable platform for your next range day, the BRN-4 Assembled Upper Receiver is engineered to meet your needs. Don't forget, all NFA rules apply.

Upgrade your shooting experience today with the BRN-4 from BROWNELLS!

Restrictions

Is a 'Call to order' product.

Top takeaways

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.
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.
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''
```
Model:
```
BRN-4
```
Muzzle:
```
1/2-28
```
Style:
```
Assembled
```
Twist:
```
1-7
```
Weapon type:
```
Brownells
```
Delivery weight: 2.495kg
Shipping height: 127mm
Shipping width: 127mm
Shipping length: 800mm
UPC: 050806500617

Item details

Made in USA
US export classification: I(g)

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