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The BRN-4 Piston Upper Receiver Kit offers HK® 416 compatibility, a lightweight medium profile barrel, and includes all necessary components for assembly.

BROWNELLS BRN-4 10.4" UPPER RECEIVER KIT W/ MEDIUM PROFILE BARREL

430103477

Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The BRN-4 Piston Upper Receiver Kit features new Brownells BRN-4 components and surplus HK® parts, designed to be compatible with HK® 416 components.
  2. Kit includes a nitride finished BRN-4 Bolt Carrier Group, a Faxon manufactured 5.56x45mm NATO barrel with a 1-7 twist, and a medium profile for better balance and weight reduction.
  3. The unassembled upper kit comes with all necessary sub-components for assembly but does not include a lower receiver, and all NFA rules apply.

Attributes

  • Barrel Length:
    10.4''
  • Barrel Type:
    Threaded
  • Cartridge:
    5.56 x 45
  • Contour:
    Medium
  • Finish:
    Black
  • Model:
    BRN-4
  • Twist Rate:
    1-7
  • Weapon type:
    Brownells
  • Delivery weight: 1.361kg

Item details

Made in USA
US export classification: I(g)
  • Specifications:
  • Barrel Length: 10.4''
  • Barrel Type: Threaded
  • Cartridge: 5.56 x 45
  • Contour: Medium
  • Finish: Black
  • Make: Brownells
  • Model: BRN-4
  • Twist Rate: 1-7
1849.9 1849.9 1 GBP
1849.9 GBP £1,849.90

Prices inclusive of duty & VAT.

Product no.: 430103477

The Brownells BRN-4 Piston Upper Receiver Kits – Parts Kit New Production Brownells and surplus HK® Components Utilizing new production Brownells BRN-4 Bolt Carrier Groups and Barrels, the unassembled BRN-4 Upper Kits feature HK® 416 compatible components, in an affordable package. The heart of this bundle is the new BRN-4 Bolt Carrier Group, with nitride finish. This BCG is designed to be compatible with 416 components, such as the genuine 416 stripped upper this kit is paired with. The BRN-4 barrel is new production as well, manufactured by Faxon for Brownells. These barrels have a 5.56x45mm NATO chamber and have a 1-7 twist. The medium profile is slimmer than classic 416 barrels, ensuring the entire complete firearm balances well and reduces overall weight. Options include a 14.5 and 16 inch barrel. The Stripped Upper Receiver and Handguard are surplus HK® parts, and will likely show signs of wear and use. All sub-components are included that allow the user to assemble and install the upper on any standard AR-15 lower receiver. UPPER KIT DOES NOT COME ASSMEMBLED. ALL NFA RULES APPLY. Included components: HK® 416 Stripped Upper Receiver HK® 416 Quad Rail Handguard BRN-4 Operating Rod BRN-4 Gas Piston BRN-4 Gas Block BRN-4 Barrel BRN-4 Bolt Carrier Group BRN-4 Gas Block Coil Pins (2x) BRN-4 Barrel Nut BRN-4 Handguard Retaining Screw AR-15 Charging Handle Magpul® Enhanced Ejection Port Cover Forward Assist Assembly Geissele® Barrel Nut Wrench
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1849.9 1849.9 1 GBP
Description Specification Customers reviews Accessories

BROWNELLS BRN-4 10.4" UPPER RECEIVER KIT W/ MEDIUM PROFILE BARREL

1849.9 GBP £1,849.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.

Description:

Discover the versatility of the BRN-4 Piston Upper Receiver Kits!

The Brownells BRN-4 Piston Upper Receiver Kits are designed for firearm enthusiasts seeking a reliable and affordable upgrade. These kits include new production Brownells components and surplus HK® parts, ensuring quality and compatibility.

Key Features:

  • New Production Components: Features the latest Brownells BRN-4 Bolt Carrier Groups and Barrels.
  • HK® Compatibility: The unassembled BRN-4 Upper Kits come with HK® 416 compatible components.
  • High-Quality Barrel: Manufactured by Faxon for Brownells, the barrel has a 5.56x45mm NATO chamber with a 1-7 twist.
  • Medium Profile: Slimmer than classic 416 barrels, enhancing balance and reducing weight.
  • Variety of Options: Available in 14.5 and 16 inch barrel lengths.
  • Surplus Parts: The Stripped Upper Receiver and Handguard are surplus HK® parts, potentially showing signs of wear.
  • Complete Assembly: All necessary sub-components are included for easy assembly on any standard AR-15 lower receiver.

Note: The UPPER KIT DOES NOT COME ASSEMBLED. All NFA rules apply.

Included Components:

  • HK® 416 Stripped Upper Receiver
  • HK® 416 Quad Rail Handguard
  • BRN-4 Operating Rod
  • BRN-4 Gas Piston
  • BRN-4 Gas Block
  • BRN-4 Barrel
  • BRN-4 Bolt Carrier Group
  • BRN-4 Gas Block Coil Pins (2x)
  • BRN-4 Barrel Nut
  • BRN-4 Handguard Retaining Screw
  • AR-15 Charging Handle
  • Magpul® Enhanced Ejection Port Cover
  • Forward Assist Assembly
  • Geissele® Barrel Nut Wrench

Upgrade your firearm with the Brownells BRN-4 Piston Upper Receiver Kits and experience the perfect blend of quality and performance!



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The BRN-4 Piston Upper Receiver Kit features new Brownells BRN-4 components and surplus HK® parts, designed to be compatible with HK® 416 components.
  2. Kit includes a nitride finished BRN-4 Bolt Carrier Group, a Faxon manufactured 5.56x45mm NATO barrel with a 1-7 twist, and a medium profile for better balance and weight reduction.
  3. The unassembled upper kit comes with all necessary sub-components for assembly but does not include a lower receiver, and all NFA rules apply.

Attributes

  • Barrel Length:
    10.4''
  • Barrel Type:
    Threaded
  • Cartridge:
    5.56 x 45
  • Contour:
    Medium
  • Finish:
    Black
  • Model:
    BRN-4
  • Twist Rate:
    1-7
  • Weapon type:
    Brownells
  • Delivery weight: 1.361kg

Item details

Made in USA
US export classification: I(g)

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