Doing Bodywork on my own car need some assistance. Please

If you go for the Harbor Freight HVLP gun, get the more expensive one (66222) and not the cheaper 47016. Sometimes the 66222 goes on sale for $20, which is when I got mine. Also, even though it says 1.4 tip on the site, when I was in the store, some had 1.4 others had I think it was 1.6. It's my cheapest gun, but I like it for the price, it seems decent enough.