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BROWNELLS
BRN-4 PISTON UPPER RECEIVER KITS
BROWNELLS BRN-4 10.4" UPPER RECEIVER KIT 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
Restrictions
- Is a 'Call to order' product.
Top takeaways
- 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.
- 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.
- 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 Make: Brownells Model: BRN-4 Twist Rate: 1-7 Delivery weight: 1.361kg
Item details
US export classification: I(g)
🔧 Upgrade your AR-15 with the BRN-4 Piston Upper Receiver Kit! Featuring HK® 416 components, nitride BCG, and a 10.4" barrel. Get started on your build today! ⚙️🛠️
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