HK416 BRN4 Complete Upper 5.56 Piston

The BRN-4® Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HK® 416 compatible handguard and any 1/2-28 muzzle device, and you’re ready to hit the range!

Built from the ground up, the core of the BRN-4® Upper Receiver is an all new Bolt Carrier Group, featuring a slick nitride finish. The carrier itself is machined from one piece of forged 8620 steel. The bolt is precision machined from 9310 tool steel and headspaced prior to and after barrel installation.

The new BRN-4® barrel, produced by Faxon®, is available in a variety of profiles and lengths to suit your needs. Barrels are chambered 5.56x45mm NATO, are button rifled with a 1-7 twist, 1/2-28 muzzle and come with the appropriate gas block for a given barrel length. Barrels are available in a medium or heavy profile. The heavy profile ensures a rigid and robust platform for precision shooting. The medium profile balances the desire to have a lighter piston configuration, while still having plenty of barrel material to prevent drifting of grouping as the barrel heats. 16in barrel, HK Handrail system AAC Flash suppressor, POF charging handle. I have $1650 in this upper. Made to HK416 specifications. Brand new never mounted or fired. Save yourself $300