To do it properly I leave the anodizing on if it has good adhesion. If it starts to flake when I sand blast at low pressure to only scuff, it is a poor job and I take it off. If it’s been cerakoted previously it has to come all the way off and that usually takes the anodizing with it. It’s amazing how many HIGH dollar AR brands have inferior anodizing. If it stays on that means it’s a true hardcoat anodize with good penetration I only blast scuff it, degrease and degas, and I’ve never had my coating come off yet without severe use and it only wears normally. Honestly the prep is the most important and also most tedious and boring.Wow, that looks great. Am I correct to assume that he stripped the lower completely before painting? I don't have any guns that are Cerakoted. How durable is it verus regular anodizing?