Upper Receivers

See why WMD has become the go to resource for high-performance custom AR buildouts and upgrades. Our upper assemblies and upper parts use the same high quality, performance components used in our NiB-X® Beast rifles.

Showing 1–12 of 34 results

• 

  NiB-X AR-15 A3/A4 Upper Receiver, Forged w/M4 Feed Ramps, Stripped

  Rated 0 out of 5

  $119.00 Add to cart
• 

  NiB-X AR-15 A3/A4 Upper Receiver, Forged w/M4 Feed Ramps, Stripped – Blemished

  Rated 0 out of 5

  $85.00 Add to cart
• 

  .308 Ejection Port Cover Assembly – NiB-X Nickel Boron

  Rated 0 out of 5

  $21.00 Add to cart
• 

  .308 Ejection Port Cover Assembly – Nitromet

  Rated 0 out of 5

  $21.00 Add to cart
• 

  1-NIBXUB-SLAB

  Rated 0 out of 5

  $95.00 Add to cart
• 

  1-NIBXUB-SLAB-C

  Rated 0 out of 5

  $155.00 Select options
• 

  ANOUA350LEGEND: Anodized Upper Assembly 350 LEGEND

  Rated 5.00 out of 5

  $665.00 Add to cart
• 

  ANOUA350LEGEND: Anodized Upper Assembly 350 LEGEND – 18″

  Rated 0 out of 5

  $665.00 Add to cart
• 

  AR-15 Ejection Port Cover Assembly – NiB-X Nickel Boron

  Rated 0 out of 5

  $19.00 Add to cart
• 

  AR-15 Ejection Port Cover Assembly – Nitromet

  Rated 0 out of 5

  $19.00 Add to cart
• 

  AR-15 Forward Assist Assembly – NiB-X Nickel Boron

  Rated 0 out of 5

  $19.50 Add to cart
• 

  AR-15 Forward Assist Assembly – Nitromet

  Rated 0 out of 5

  $19.50 Add to cart