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Rifle Parts Barrel Parts Rifle Barrels BROWNELLS BRN-4 STRIPPED BARREL,16.5" HEAVY, 1-7, 1/2"-28, BLK NITRIDE Support

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.

BROWNELLS BRN-4 STRIPPED BARREL,16.5" HEAVY, 1-7, 1/2"-28, BLK NITRIDE

050806500754 080001443

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Variations
Filters:
Variations:

Variations:

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 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 *
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 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 *
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.: 080001443

Mfr. No.: BN-BRN4556-16H

050806500754 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,16.5" 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 Brownells BRN-4 barrels!

The Brownells BRN-4 BARRELS 5.56X45MM are expertly engineered to provide unmatched compatibility and reliability for your HK® 416 compatible builds.

Product Features:

  • Compatibility: Designed for early generations of HK® 416 upper receivers and components.
  • Barrel Lengths: Available in 10.4", 14.5", and 16.5" lengths to suit various shooting needs.
  • Profiles: Choose between a classic “heavy” profile for rigidity or a “medium” profile for a lighter, more agile rifle.
  • Rifling: Button rifled with a 1-7 twist for enhanced accuracy.
  • Muzzle Threads: Commonly used ½-28 threads for easy attachment of your preferred muzzle device.
  • Finish: Deep black nitride finish ensures durability and easy cleaning.
  • Barrel Extension: Longer barrel extension for a robust fit with the upper receiver, paired with the BRN-4 barrel nut (430-100-141).
  • Chambering: 5.56x45mm NATO compatible, allowing for a wide range of commercially available ammunition, including .223 Remington cartridges.
  • Gas System: All barrels feature the same piston rod assembly (078-000-644), simplifying compatibility with the correct BRN-4 gas block (078-000-708 & 078-000-709).
  • Assembly: Don’t forget to add the gas block coil pins for final assembly (430-103-127).
  • Recommended Barrel Nut Torque: 50-80 ft/lbs.

Elevate your shooting experience with the Brownells BRN-4 Stripped Barrel – a perfect blend of tradition and innovation, designed for the discerning shooter.



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. Brownells BRN-4 barrels are HK® 416 compatible, offered in heavy and medium profiles, with lengths including 16 inches.
  2. These barrels feature a 1-7 twist rate, ½-28 muzzle threads, and a durable black nitride finish.
  3. Designed for easy installation, they match with BRN-4 bolt carrier groups and gas blocks, and are chambered in 5.56x45mm NATO.

Attributes

  • Cartridge: 
    5.56 x 45
  • Contour: 
    Heavy
  • Finish: 
    Black Nitride
  • Gas System Length: 
    416
  • Length: 
    16''
  • Model: 
    MR556
    , 
    HK416
    , 
    BRN-4
  • Muzzle Threads: 
    1/2-28
  • Twist: 
    1-7
  • Weapon type: 
    Brownells
    , 
    Heckler & Koch
  • Delivery weight: 0.522kg
  • Shipping height: 32mm
  • Shipping width: 32mm
  • Shipping length: 432mm
  • UPC: 050806500754

Item details

Made in USA
US export classification: 0A501.c

Customers reviews

Customer ratings (0)

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Variations:

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 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 *
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 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 *
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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