When I get the P01 slide machined for a red dot I'm thinking of getting the slide, barrel, barrel bushing, hammer, safeties and slide release nitrided to improve resistance to surface rusting.
But what about the aluminum frame. Is there a finish/refinish for aluminum that is as tough as the nitrided surfaces? I'd hate to get the top of it looking good only to have the black wear off the frame in a few months of carrying the pistol.