Anybody Duracoat Their Guns ?

That rifle looks BAD A$$. I would have agreed with the bolt/carrier surface but Steve Lauer was talking about using Duracoat ( presume the self lubricating option ) to tighten up tolerance. Spray the bolt or ? until you need a mallet to drive home, extract, pound in again, extract, coat with lapping compound, them home/extract repeat repeat etc until you can tap with fingernail and it slides home with no play. I think I'll stick with exterior surfaces except for what was done to the inside of the Glock slide/frame and the like.