just curious why you wouldn't just parkerize it like the rest of the kit? get a kit for parkerizing on ebay for like 30 bux? easy to do just need a propane grill or one of those turkey fryer's with the propane setup. just a thought, I usually paint my kits but plan to do a few grey oxide builds with black furniture soon. besides park is a great milspec finnish. just a suggestion. type parkerizing in the ebay search box look what they got "black/grey kits" they are great. have used them personally with great success.