done several over the years my old ami 6 est dads newer ami 6 est hugo our ak 4oo complete inside and out.the h van now that was a test. my brother had a vw bay we painted that with cellulose. dad bought a compresser and gun and we just had a go in the garage soon got the hang of it... the trick is the preperation of the metal. the longer you spend on prep the better the finish will be