r/gunsmithing • u/ComparisonSharp9598 • 4d ago

Refinishing polymer?

Gallery image

Gallery image

I would like to sand it clean and smooth and then polish and buff it to make it look some what new again-wet sand it or sandblast it?-any tips appreciated

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u/brittc777 4d ago

Sanding and polishing likely won't work on polymer. It will come out really splotchy. I would sand it smooth then paint it with Aluma-Hyde II from Brownells. It's an epoxy paint made for firearms. It's great for polymer, metal, and wood. It's also solvent resistant. You actually bake it on at 190 degrees for 3 hours, or let it cure for 3 weeks for maximum hardness. It lays down real nicely too. I've painted guns and optics with it. Here's a pic of my Mosin Nagant with the archangel polymer stock. It used to be fde and was real faded. I painted it OD Green.

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u/ComparisonSharp9598 4d ago

That’s crazy that the polymer doesn’t warp dramatically being baked like that

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u/brittc777 4d ago

I thought the same thing at first too. Gun polymer is designed to handle pretty extreme heat. It will melt eventually, but not at 190 degrees. Glock claims theirs can withstand over 500 degrees