depending on your gun if I were you ,I would go to H-Depot they have a decent selection and any fittings you might need handy so you are not ordering any extras, I run nail guns all the time with my compressor, and it works great for my airbrush if you are only spraying then get a water trap it catches moisture that would otherwise mess with your paint . I happen to use a binks airbrush that I have set up with a quick disconnect like on a air tool most paint tools need between 25-60 psi to run the tool so a small set up would suffice .nail guns need 90-110psi to operate to much presure and you will blow your seals on your paint gun so a compressor with a regulator would be a good idea