Brownells just announced a new HK416-pattern upper receiver kit, the BRN-4. This piston-driven upper is compatible with standard AR-15 lower receiver groups.
Thank you for reading this post, don't forget to follow and signup for notifications!
Brownells @ TFB:
- TFB Review: Brownells BRN-10 – A Legend Resurrected
- Brownells Exclusive: Sons Of Liberty Gun Works M4-EXO3 Rifle Build Kit
- NEW Brownells MPO 1-6×24 Scope with Illuminated Donut Reticle
- [IWA 2022] Brownells: The WWSD Crosses the Pond!
Heckler & Koch’s HK416 needs little introduction. It has seen service with conventional armies and special operations forces, and was famously used to kill Osama bin Laden. The closest thing to a 416 on the US market is the MR556, but it has some differences that drive the purists crazy. Some may remember that Brownells imported a selection of true HK416 parts a few years ago. Those dried up, but the demand did not.
Enter the BRN-4. It’s compatible with 416 parts and has the classic quad rail as seen on the M-27. Clone nerds who may have some parts for their CAG clone can buy parts separately to complete their build. The BRN-4 upper kit is available with a 14.5″ or 16″ barrel, produced by Faxon. Both options are available as of the time of writing and are currently on sale for $1,499. A 10.4″ barrel is also available but is not sold as part of a kit.
From the manufacturer:
BROWNELLS BRN-4 PISTON UPPER RECEIVER KITS:
An Affordable Way To Own a Legend!
The HK416 is perhaps most successful adaptation of the AR-5 platform for piston operation. Long coveted by AR-15 collectors, these guns have been scarce and prohibitively expensive in the U.S. Now, folks who want to experience 416 performance first-hand have a truly affordable alternative, thanks to our new HK416-compatible BRN-4 Piston Upper Receiver Kit!
The kit contains all the parts needed to assemble a complete upper, including an original Heckler & Koch® HK416 stripped receiver and handguard. The rest of the HK416-compatible BRN-4 parts are new-manufactured for Brownells: bolt-carrier group with tough Nitride finish, gas piston, operating rod, gas block (and pins), barrel nut, and handguard retaining screw.
You can get your BRN-4 kit with a 14.5″ or 16″ barrel. Manufactured for Brownells by Faxon, the medium-contour, 5.56 NATO chambered BRN-4 barrel is slimmer than original HK416 barrels to keep weight down and help you build a well-balanced rifle.
Check Prices on Brownells BRN-4 Upper Receiver Kits
All images via Brownells
We are committed to finding, researching, and recommending the best products. We earn commissions from purchases you make using the retail links in our product reviews. Learn more about how this works.