• NiB-X nickel boron surface coating inside and out - provides a lubricious surface and ensures smooth cycling as it minimizes fouling or grit adhesion
  • "T" numbers engraved
  • Machined shell deflector and dust cover port (port door not included)
  • No forward assist slot
  • DPMS style high profile
  • M4 style feed ramps
  • Compatible with Gen I DPMS LR-308 style .308 AR components


  • Material: 7075-T6 Aluminum
  • Finish: NiB-X Nickel Boron
  • Weight: 12.35 oz.


  • DPMS Gen I pattern LR308 rifles

*Will not fit DPMS Gen 2 pattern rifles


When you’re looking for an AR-10 upper for your next build you have a lot of choices to sift through. Choosing an AR10 stripped upper gives you absolute control over your rifle build without the guilt of changing out and discarding parts you’ve paid good money for. When you want a quality Nickle Boron AR10 upper receiver, you don’t need to look any further than the WMD Guns NiB-X Nickel Boron AR10 Billet Upper Receiver. Wing Tactical proudly offers this AR10 stripped upper to those members of small arms community who want the superior wear qualities of a Nickel Boron AR10 Upper receiver for their next build.

Introducing the .308 AR-10 Big Beast NiB-X Billet Upper

The WMD AR10 Big Beast upper is a precision machined aluminum Upper. The DPMS style 7075 T-6 aluminum upper features a Picatinny top rail and is fully coated, exterior and interior with WMD Guns’ proprietary NiB-X nickel boron coating. This is the same quality upper used in WMD’s Big Beast complete chassis, but you get to choose the parts to make it your own dream AR10 nickel boron upper receiver.

Why NiB-X?

Nib-X is a leadless Nickel Boron plating process that WMD created from scratch, using their own special Nickel Boron solution and process to produce the hardest nickel boron coating on the market. When you start with a NiB-X nickel boron AR10 upper you begin with the promise of long service life and low friction operation. The NiB-X surfaces will shed grime, allowing for faster, less frequent cleaning with less effort. Keeping it clean allows the parts of your rifle to function without restriction, reducing friction and wear to your system a WMD NiB-X Nickel Boron AR10 upper receiver is an excellent choice if you want to give yourself an edge from day one of your build and long into the future.

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