Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
Is this upper thermal fitted ?

I used a full nickel version on a build about 6-7 years ago. I did not have to thermal fit the barrel / barrel extension. I don't remember which barrel I used, I think it was an off brand, but not super cheap one.

by Rick, Verified Owner, April 30, 2026
Customer Reviews
Helpful Positive Review
Near perfect. by Demun, Verified Owner, March 15, 2025
WMD Guns quality control is A+. top tier mil spec upper. Properly machined... and NiB-X applied for an outstanding finish. I got (NRA Blue)!!
1/1 found this helpful
Helpful Positive Review
Slick like Pauly Ds hair. by NB19, December 18, 2021
This NiB coating is just that slick. It feels so smooth with no rough edges for your comfort. No lube needed for real. The fit it like a glove. Real snug and tight for that prefect fit. Not to big but not to loose. This upper is like Paris Hilton sai...
Read More...
3/3 found this helpful
Helpful Negative Review
Don't get the topcoated items, overspray everywhere in the inside and the barrel area is rough Wanted to like this, if they would have just taped off the part and not oversprayed the entire inside and barrel seat it might have been great. Would not...
Read More...
4/4 found this helpful
Most Recent Reviews
nice solid upper by BOBBY, Verified Owner, March 12, 2025
Great colors if you want your AR to stand out and must be some kind of cerakote does not cone off� solid construction feels good in the hand operates as it should BCG slides tight and solidly for the price and color choices go for it �
Most Recent Reviews
hit and miss product by Ryan Campbell, Verified Owner, March 9, 2024
The nib coating is slick but needs the ceracoat finish scrubbed out. The nib coating has no purpose on the outside of the receiver. In fact it keeps the ceracoat from bonding properly and as a result, the ceracoat scratches quite easily. I have rattl...
Read More...
1/2 found this helpful
Most Recent Reviews
Solid so far by Zak Heaton, Verified Owner, March 3, 2023
Mated with a STNGR hand-guard, Seekins adjustable gas block, Griffin Armament bolt, and Hughes Ballistics Primus barrel. Smooth as silk functioning so far. Haven’t test fired, but have ran dummies through function test with no hiccups.
Read All 6 Reviews
14% OFF Select Categories
On Sale

14% OFF Gun Parts

MERICAAClick to Copy Coupon Code
Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
Show In Stock Only
16 Models Available

Show with deals only:

Coupon Available
On Sale
Color
All
Search

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for WMD Guns AR-15 Stripped NiB-X Complete Upper Receiver

NiB-X A3/A4 Upper Receiver w/M4 Feed Ramps, Forged, Stripped with Ceramic Color Topcoat. Ideal building block for a long lasting AR15. This 7075 T6 Aluminum forged Mil Spec stripped receiver with M4 feed ramps has NiB-X coating inside and out to provide an exceptionally tough, ultra-smooth surface finish for outstanding wear resistance and lubricity. NiB-X is almost twice as hard as anodize and has a much lower coefficient of friction. Topcoated on the outside only with a ceramic color coating leaving NiB-X exposed on the inside wear surfaces. Standard colors are available. A matching topcoated NiB-X charging handle is a perfect complement for this upper receiver.image

Specifications for WMD Guns AR-15 Stripped NiB-X Complete Upper Receiver:

Manufacturer: WMD Guns
Finish: NiB-X
Gun Make: AR Platform
Gun Model: AR-15
Condition: New

Package Contents:

  • WMD Guns AR-15 Stripped NiB-X Complete Upper Receiver

WMD Guns AR-15 Stripped NiB-X Complete Upper Receiver Orderable Models

List of Orderable Models

  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, NRA Blue, 1-NIBXUF-NRA Blue , MPN: 1-NIBXUF-NRA Blue , Code: 1UX-UPR-UR5S-1-NIBXUF-NRA-BLUE
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, White, 1-NIBXUF-White , MPN: 1-NIBXUF-White , Code: 1UX-UPR-UR5S-1-NIBXUF-WHITE
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Prison Pink, 1-NIBXUF-Prison Pink , MPN: 1-NIBXUF-Prison Pink , Code: 1UX-UPR-UR5S-1-NIBXUF-PRISON-PINK
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Aztec Teal, 1-NIBXUF-Aztec Teal , MPN: 1-NIBXUF-Aztec Teal , Code: 1UX-UPR-UR5S-1-NIBXUF-AZTEC-TEAL
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Battle Grey, 1-NIBXUF-Battle Grey , MPN: 1-NIBXUF-Battle Grey , UPC: 3433515 , Code: 1UX-UPR-UR5S-1-NIBXUF-BATTLE-GREY
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Pink Sherbert, 1-NIBXUF-Pink Sherbert , MPN: 1-NIBXUF-Pink Sherbert , Code: 1UX-UPR-UR5S-1-NIBXUF-PINK-SHERBERT
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Robbin Egg Blue, 1-NIBXUF-Robbin Egg Blue , MPN: 1-NIBXUF-Robbin Egg Blue , Code: 1UX-UPR-UR5S-1-NIBXUF-ROBBIN-EGG-BLUE
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Hunter Orange, 1-NIBXUF-Hunter Orange , MPN: 1-NIBXUF-Hunter Orange , Code: 1UX-UPR-UR5S-1-NIBXUF-HUNTER-ORANGE
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Cobalt, 1-NIBXUF-Cobalt , MPN: 1-NIBXUF-Cobalt , Code: 1UX-UPR-UR5S-1-NIBXUF-COBALT
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Jesse James Green, 1-NIBXUF-Jesse James Green , MPN: 1-NIBXUF-Jesse James Green , Code: 1UX-UPR-UR5S-1-NIBXUF-JESSE-JAMES-GREEN
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Corvette Yellow, 1-NIBXUF-Corvette Yellow , MPN: 1-NIBXUF-Corvette Yellow , Code: 1UX-UPR-UR5S-1-NIBXUF-CORVETTE-YELLOW
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Nickel, 1-NIBXUF , MPN: 1-NIBXUF , UPC: 855899003225 , Code: 1UX-UPR-UR5S-1-NIBXUF
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Flat Dark Earth, 1-NIBXUF-Flat Dark Earth , MPN: 1-NIBXUF-Flat Dark Earth , UPC: 855899003058 , Code: 1UX-UPR-UR5S-1-NIBXUF-FLAT-DARK-EARTH
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Burnt Bronze, 1-NIBXUF-Burnt Bronze , MPN: 1-NIBXUF-Burnt Bronze , Code: 1UX-UPR-UR5S-1-NIBXUF-BURNT-BRONZE
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Titanium Blue, 1-NIBXUF-Titanium Blue , MPN: 1-NIBXUF-Titanium Blue , Code: 1UX-UPR-UR5S-1-NIBXUF-TITANIUM-BLUE
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, OD Green, 1-NIBXUF-OD Green , MPN: 1-NIBXUF-OD Green , Code: 1UX-UPR-UR5S-1-NIBXUF-OD-GREEN

WMD Guns AR-15 Stripped NiB-X Complete Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Crimson, 1-NIBXUF-Crimson , MPN: 1-NIBXUF-Crimson , Code: 1UX-UPR-UR5S-1-NIBXUF-CRIMSON
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Purple, 1-NIBXUF-Purple , MPN: 1-NIBXUF-Purple , Code: 1UX-UPR-UR5S-1-NIBXUF-PURPLE
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Marine Corp Red, 1-NIBXUF-Marine Corp Red , MPN: 1-NIBXUF-Marine Corp Red , Code: 1UX-UPR-UR5S-1-NIBXUF-MARINE-CORP-RED
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Black, 1-NIBXUF-Black , MPN: 1-NIBXUF-Black , UPC: 855899003041 , Code: 1UX-UPR-UR5S-1-NIBXUF-BLACK
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Northern Lights, 1-NIBXUF-Northern Lights , MPN: 1-NIBXUF-Northern Lights , Code: 1UX-UPR-UR5S-1-NIBXUF-NORTHERN-LIGHTS
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Black Cherry, 1-NIBXUF-Black Cherry , MPN: 1-NIBXUF-Black Cherry , Code: 1UX-UPR-UR5S-1-NIBXUF-BLACK-CHERRY
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Zombie Green, 1-NIBXUF-Zombie Green , MPN: 1-NIBXUF-Zombie Green , Code: 1UX-UPR-UR5S-1-NIBXUF-ZOMBIE-GREEN
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Firehouse Red, 1-NIBXUF-Firehouse Red , MPN: 1-NIBXUF-Firehouse Red , Code: 1UX-UPR-UR5S-1-NIBXUF-FIREHOUSE-RED
  • WMD Guns AR-15 A3/A4 Upper Receiver Forged, w/M4 Feed Ramps, Stripped, NiB-X, Coyote Tan, 1-NIBXUF-Coyote Tan , MPN: 1-NIBXUF-Coyote Tan , Code: 1UX-UPR-UR5S-1-NIBXUF-COYOTE-TAN
Compare (0)
Last updated 2026-06-29 UTC.