NP3 Plus is a modified version of NP3 that offers additional corrosion protection for use in harsh environments. As the process is considerably more costly the NP3 Plus is more than the NP3. For the vast majority of applications NP3 offers more than enough corrosion protection.
The Robar Companies
Offering premium firearm finishes, custom gunsmithing and polymer pistol frame reductions & modifications since 1986.