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Rifle Parts Barrel Parts Rifle Barrels BROWNELLS BRN-4 STRIPPED BARREL,14.5" HEAVY, 1-7, 1/2"-28,BLK NITRIDE Support

The BRN-4 14.5" Heavy Barrel features HK® 416 compatibility, robust construction, easy installation, and a durable black nitride finish for reliable performance.

BROWNELLS BRN-4 STRIPPED BARREL,14.5" HEAVY, 1-7, 1/2"-28,BLK NITRIDE

050806500723 080001441

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Variations
Filters:
Variations:

Variations:

The BRN-4 14.5" Heavy Barrel features HK® 416 compatibility, robust construction, easy installation, and a durable black nitride finish for reliable performance.
BRN-4 BARRELS 5.56X45MM - BRN-4 STRIPPED BARREL,14.5" HEAVY, 1-7, 1/2"-28,BLK NITRIDE
279.9 GBP 319 £279.90 *
In stock
Cartridge: 5.56 x 45 Contour: Heavy Finish: Black Nitride Gas System Length: 416 Length: 14.5'' Make: Heckler & Koch, Brownells Model: HK416, MR556, BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001441
In stock
279.9 GBP 319 £279.90 *
Discover the BRN-4 5.56mm barrels, featuring heavy or medium profiles, 1-7 twist, nitride finish, and compatibility with HK® 416 components for versatile performance.
BRN-4 BARRELS 5.56X45MM - BRN-4 5.56MM 10.4" 1-7 TWIST HEAVY NITRIDE BARREL
304.9 GBP 0 £304.90 *
Not available
Cartridge: 5.56 x 45 Contour: Heavy Finish: Black Nitride Gas System Length: 416 Length: 10.4'' Make: Heckler & Koch, Brownells Model: BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001439
Not available
304.9 GBP 0 £304.90 *
The Brownells BRN-4 10.4" barrel offers HK® 416 compatibility, a durable black nitride finish, and a lightweight medium profile for enhanced handling.
BRN-4 BARRELS 5.56X45MM - BRN-4 STRIPPED BARREL,10.4" MEDIUM, 1-7, 1/2"-28,BLK NITRIDE
279.9 GBP 102 £279.90 *
In stock
Cartridge: 5.56 x 45 Contour: Medium Finish: Black Nitride Gas System Length: 416 Length: 10.4'' Make: Heckler & Koch, Brownells Model: HK416, MR556, BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001440
In stock
279.9 GBP 102 £279.90 *
Discover the Brownells BRN-4 14.5" Medium Barrel, featuring a durable black nitride finish, 1-7 twist, and compatibility with HK® 416 components for versatile performance.
BRN-4 BARRELS 5.56X45MM - BRN-4 STRIPPED BARREL,14.5" MEDIUM, 1-7, 1/2"-28,BLK NITRIDE
279.9 GBP 558 £279.90 *
In stock
Cartridge: 5.56 x 45 Contour: Medium Finish: Black Nitride Gas System Length: 416 Length: 14.5'' Make: Heckler & Koch, Brownells Model: HK416, MR556, BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001442
In stock
279.9 GBP 558 £279.90 *
The BRN-4 16.5" Heavy Barrel offers HK® 416 compatibility, a durable black nitride finish, and 1-7 twist for precision with 5.56x45mm NATO ammunition.
BRN-4 BARRELS 5.56X45MM - BRN-4 STRIPPED BARREL,16.5" HEAVY, 1-7, 1/2"-28, BLK NITRIDE
279.9 GBP 248 £279.90 *
In stock
Cartridge: 5.56 x 45 Contour: Heavy Finish: Black Nitride Gas System Length: 416 Length: 16'' Make: Heckler & Koch, Brownells Model: HK416, MR556, BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001443
In stock
279.9 GBP 248 £279.90 *
Discover the Brownells BRN-4 16.5" Medium Barrel, featuring a durable black nitride finish, 1-7 twist, and compatibility with HK® 416 components for versatile performance.
BRN-4 BARRELS 5.56X45MM - BRN-4 STRIPPED BARREL,16.5" MEDIUM, 1-7, 1/2"-28,BLK NITRIDE
284.9 GBP 650 £284.90 *
In stock
Cartridge: 5.56 x 45 Contour: Medium Finish: Black Nitride Gas System Length: 416 Length: 16'' Make: Heckler & Koch, Brownells Model: HK416, MR556, BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001444
In stock
284.9 GBP 650 £284.90 *
279.9 304.9 6 GBP
279.9 GBP £279.90

Prices inclusive of duty & VAT.

Product no.: 080001441

Mfr. No.: BN-BRN4556-14.5H

050806500723 Brownells BRN-4 HK® 416 compatible barrels, available in a variety of lengths and two contours. Historically extremely hard to procure, HK® 416 compatible barrels are now available as part of the BRN-4 lineup. These barrels machined by Faxon, fit early generations of HK® 416 upper receivers and components. They are the perfect fit with the BRN-4 bolt carrier group and gas block (search “BRN-4” for all parts). Available in common barrel lengths of 10.4, 14.5 and 16 inch, these barrels are suitable for any need. You can select the classic “heavy” profile, which is similar to the profile found on earlier HK® 416 models, ensuring barrel rigidity with minimal flex, or you can pick the new “medium” profile, which saves weight and makes the rifle quite handy. Barrels are button rifled with a 1-7 twist and have commonly used ½-28 muzzle threads for the attachment of the muzzle device of your choice. A deep black nitride finish provides an extremely hard exterior and interior, that is easy to clean. The longer barrel extension of the BRN-4 allows for a robust matchup to the upper receiver, and a simple install with the BRN-4 barrel nut (430-100-141). 5.56x45mm NATO chamberings allow for a wide variety of commercially found ammunition to function, as well as 223 Remington cartridges. No need to worry about picking the right gas system length, as all of these barrels have the same piston rod assembly (078-000-644), just be sure to pick the correct BRN-4 gas block to match your overall barrel length, 078-000-708 & 078-000-709). Be sure to pick up the gas block coil pins for final assembly as well (430-103-127). Recommended Barrel Nut Torque: 50-80 ft/lbs.
In stock More than 10 pieces in USA warehouse
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Delivery time approx. 7-14 days.

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279.9 304.9 6 GBP
Description Specification Customers reviews Accessories

BROWNELLS BRN-4 STRIPPED BARREL,14.5" HEAVY, 1-7, 1/2"-28,BLK NITRIDE

279.9 GBP £279.90

Prices inclusive of duty & VAT.

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

Description:

Discover the exceptional performance of the BRN-4 Barrels from Brownells.

The Brownells BRN-4 is a line of HK® 416 compatible barrels that have become increasingly accessible, offering a range of lengths and contours to suit your shooting needs.

Product Features:

  • Compatibility: Designed for early generations of HK® 416 upper receivers and components.
  • Barrel Lengths: Available in 10.4", 14.5", and 16" lengths.
  • Profiles: Choose between the classic “heavy” profile for rigidity or the “medium” profile for reduced weight and enhanced handling.
  • Rifling: Button rifled with a 1-7 twist rate.
  • Muzzle Threads: Commonly used ½-28 threads for easy attachment of muzzle devices.
  • Finish: Deep black nitride finish for a hard-wearing, easy-to-clean exterior.
  • Barrel Extension: Longer extension for a robust fit with the upper receiver.
  • Chambering: 5.56x45mm NATO compatible, also supports .223 Remington cartridges.
  • Gas System: All barrels share the same piston rod assembly (078-000-644) for convenience.

When selecting your gas block, ensure you choose the correct BRN-4 gas block to match your barrel length (options 078-000-708 & 078-000-709). Don’t forget to pick up the gas block coil pins for final assembly (430-103-127).

Recommended Barrel Nut Torque: 50-80 ft/lbs.

Upgrade your firearm with the Brownells BRN-4 Stripped Barrel and experience the perfect blend of performance and reliability.



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. Brownells BRN-4 barrels are HK® 416 compatible, offered in heavy and medium profiles, and are machined by Faxon for early generation HK® 416 upper receivers.
  2. These 5.56x45mm NATO barrels come in 14.5" length with a 1-7 twist rate, button rifling, and ½-28 muzzle threads for various muzzle devices.
  3. The barrels feature a black nitride finish for durability and ease of cleaning, and require the BRN-4 gas block and barrel nut for installation.

Attributes

  • Cartridge: 
    5.56 x 45
  • Contour: 
    Heavy
  • Finish: 
    Black Nitride
  • Gas System Length: 
    416
  • Length: 
    14.5''
  • Model: 
    MR556
    , 
    HK416
    , 
    BRN-4
  • Muzzle Threads: 
    1/2-28
  • Twist: 
    1-7
  • Weapon type: 
    Heckler & Koch
    , 
    Brownells
  • Delivery weight: 0.612kg
  • Shipping height: 38mm
  • Shipping width: 38mm
  • Shipping length: 368mm
  • UPC: 050806500723

Item details

Made in USA
US export classification: 0A501.c

Customers reviews

Customer ratings (0)

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Variations:

The BRN-4 14.5" Heavy Barrel features HK® 416 compatibility, robust construction, easy installation, and a durable black nitride finish for reliable performance.
BRN-4 BARRELS 5.56X45MM - BRN-4 STRIPPED BARREL,14.5" HEAVY, 1-7, 1/2"-28,BLK NITRIDE
279.9 GBP 319 £279.90 *
In stock
Cartridge: 5.56 x 45 Contour: Heavy Finish: Black Nitride Gas System Length: 416 Length: 14.5'' Make: Heckler & Koch, Brownells Model: HK416, MR556, BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001441
In stock
279.9 GBP 319 £279.90 *
Discover the BRN-4 5.56mm barrels, featuring heavy or medium profiles, 1-7 twist, nitride finish, and compatibility with HK® 416 components for versatile performance.
BRN-4 BARRELS 5.56X45MM - BRN-4 5.56MM 10.4" 1-7 TWIST HEAVY NITRIDE BARREL
304.9 GBP 0 £304.90 *
Not available
Cartridge: 5.56 x 45 Contour: Heavy Finish: Black Nitride Gas System Length: 416 Length: 10.4'' Make: Heckler & Koch, Brownells Model: BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001439
Not available
304.9 GBP 0 £304.90 *
The Brownells BRN-4 10.4" barrel offers HK® 416 compatibility, a durable black nitride finish, and a lightweight medium profile for enhanced handling.
BRN-4 BARRELS 5.56X45MM - BRN-4 STRIPPED BARREL,10.4" MEDIUM, 1-7, 1/2"-28,BLK NITRIDE
279.9 GBP 102 £279.90 *
In stock
Cartridge: 5.56 x 45 Contour: Medium Finish: Black Nitride Gas System Length: 416 Length: 10.4'' Make: Heckler & Koch, Brownells Model: HK416, MR556, BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001440
In stock
279.9 GBP 102 £279.90 *
Discover the Brownells BRN-4 14.5" Medium Barrel, featuring a durable black nitride finish, 1-7 twist, and compatibility with HK® 416 components for versatile performance.
BRN-4 BARRELS 5.56X45MM - BRN-4 STRIPPED BARREL,14.5" MEDIUM, 1-7, 1/2"-28,BLK NITRIDE
279.9 GBP 558 £279.90 *
In stock
Cartridge: 5.56 x 45 Contour: Medium Finish: Black Nitride Gas System Length: 416 Length: 14.5'' Make: Heckler & Koch, Brownells Model: HK416, MR556, BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001442
In stock
279.9 GBP 558 £279.90 *
The BRN-4 16.5" Heavy Barrel offers HK® 416 compatibility, a durable black nitride finish, and 1-7 twist for precision with 5.56x45mm NATO ammunition.
BRN-4 BARRELS 5.56X45MM - BRN-4 STRIPPED BARREL,16.5" HEAVY, 1-7, 1/2"-28, BLK NITRIDE
279.9 GBP 248 £279.90 *
In stock
Cartridge: 5.56 x 45 Contour: Heavy Finish: Black Nitride Gas System Length: 416 Length: 16'' Make: Heckler & Koch, Brownells Model: HK416, MR556, BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001443
In stock
279.9 GBP 248 £279.90 *
Discover the Brownells BRN-4 16.5" Medium Barrel, featuring a durable black nitride finish, 1-7 twist, and compatibility with HK® 416 components for versatile performance.
BRN-4 BARRELS 5.56X45MM - BRN-4 STRIPPED BARREL,16.5" MEDIUM, 1-7, 1/2"-28,BLK NITRIDE
284.9 GBP 650 £284.90 *
In stock
Cartridge: 5.56 x 45 Contour: Medium Finish: Black Nitride Gas System Length: 416 Length: 16'' Make: Heckler & Koch, Brownells Model: HK416, MR556, BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 080001444
In stock
284.9 GBP 650 £284.90 *

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