If I can recommend some airbrush gun.... After years of model making I start worked with Harder&Steenbeck Infinity 2in1. It is absolutely the best airbrush gun... for me. I worked with Fengda, Iwata, Schneider.... but H&S Infinity is best. For details or alclad you can use 0,15 mm nozzle and for bigger things is here 0,4mm. To make a change of nozzles and needles is question of 20 seconds. It is very good and friendly to cleaning. And of course seals are teflon ( I normally use high aggresive car base color). Problem is only one - price. Or try to Hansa ( it is daughter factory of H&S).