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050806500754 080001443
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.  
304.9 304.9 6 GBP
Product no.: 080001443
BROWNELLS BRN-4 16" BARREL HEAVY PROFILE 1-7 1/2-28"
Mfr Part: 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.
304.9 GBP 324 £304.90 *
Is a 'Call to order' product.
Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse
Specs: 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

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'' Make: Brownells,Heckler & Koch Model: MR556,HK416,BRN-4 Muzzle Threads: 1/2-28 Twist: 1-7 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



Product no.: 080001439
BROWNELLS BRN-4 10.4" BARREL HEAVY PROFILE 1-7 1/2-28"
Mfr Part: BN-BRN4556-10.4 050806500709 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.
304.9 GBP 36 £304.90 *
Is a 'Call to order' product.
Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse
Specs: 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.: 080001440
BROWNELLS BRN-4 10.4" BARREL MEDIUM PROFILE 1-7 1/2-28"
Mfr Part: BN-BRN4556-10.4 050806500716 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.
304.9 GBP 315 £304.90 *
Is a 'Call to order' product.
Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse
Specs: 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.: 080001441
BROWNELLS BRN-4 14.5" BARREL HEAVY PROFILE 1-7 1/2-28"
Mfr Part: BN-BRN4556-14.5 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.
304.9 GBP 394 £304.90 *
Is a 'Call to order' product.
Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse
Specs: 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.: 080001442
BROWNELLS BRN-4 14.5" BARREL MEDIUM PROFILE 1-7 1/2-28"
Mfr Part: BN-BRN4556-14.5 050806500747 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.
304.9 GBP 693 £304.90 *
Is a 'Call to order' product.
Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse
Specs: 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.: 080001444
BROWNELLS BRN-4 16" BARREL MEDIUM PROFILE 1-7 1/2-28"
Mfr Part: BN-BRN4556-16M 050806500761 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.
304.9 GBP 687 £304.90 *
Is a 'Call to order' product.
Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse
Specs: 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

Upgrade your rifle with the BRN-4 16" Barrel! 🔥 Designed for HK® 416 compatibility, it offers durability and precision for 5.56x45mm ammunition.

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.  
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