I have a friend that uses aluma-hyde or whatever Brownels calls it. Stuff looks good on my M1A Stainless match barrel that he did for me. I have used duracoat and love it. It needs to cure for 2 or 3 weeks though, trust me. GunKoat is ok but you need a large oven to put a barrel in. I would only do it If I could hang it vertically. Same with cerakote