NiB-X® Castle Nut


5.56 Castle Nut with the proprietary nickle boron process perfected by WMD.

Product Description

The proprietary nickle boron formulation…and a remarkable technology proves that not all nickel boron coatings are created equal. WMD has been a pioneer in of nickel boron technology in the firearms industry, and not only is our coating formula unique; our application process is, as well. We’re confident that our NiB-X® coating provides the optimal combination of hardness, wear resistance, lubricity, and corrosion resistance. The coating has a Rc 70 and a coefficient of friction of .06. NiB-X® maintains its properties in high temperature applications and impervious to most chemicals (Nitric Acid notwithstanding). It has the same material properties throughout the structure of the coating so integrity and properties are maintained throughout the thickness.


  • Nickle Boron proprietary formulation
  • Optimal combination of hardness, lubricity and corrosion resistance
  • Made in the USA

Made To:

WMD Guns®
Allow Giftwrapper
Firearm Brand
Multiple Brands
Firearm Model
Modern Sporting Rifle
6.4 oz
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