Different guys will suggest different things, scotchbrite pads, etc. I have had really good luck refinishing 3rd Gen Smith stainless parts with very fine glass bead, such as Brownells 270+ glass bead. If you wanted a more matte finish, but not rough, bead blast with 60-80 first, then finish with the finer stuff. You can also get different finishes with more or less PSI. With bead blasting, however, you need to completely detail strip the entire gun. The glass bead gets everywhere. Everything then needs to be super clean before re-assembly. Also, don't blast stainless or aluminum in a friend's automotive cabinet. You can embed old carbon steel into your stainless, which will cause it to possibly rust. Best bet would be to go to Harbor Freight, Tractor Supply, etc and purchase a $100 mini-cabinet just for this project. Once you get it down to a science, you'll want to do all your small parts, magazines, you'll want to be blasting everything. Good luck.
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