Show your true colors with metal coating and surface treatments that hold true. Accents that never relent, this 5.56 Cal NiB-X Accent Build Kit delivers uncompromising wear protection to the key components of your MSR. Parts coated in NiB-X retain higher levels of corrosion protection, wear resistance and overall dependability, as this proprietary coating process delivers the highest hardness rating in the nickel boron plating industry.Note: Not available for internat