Helix Gunsmithing offers Parkerizing. Parkerizing is a method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of a chemical phosphate conversion coating. Parkerizing is usually considered to be an improved zinc or manganese phosphating process, and not to be an improved iron phosphating process.
With proper care and handling, this process need not ever be repeated, making this a valuable investment to a weapons owner.
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