Both the Full size and touch up guns work very nice. They do need to be disassembled and cleaned before use. The full size gun comes with two needles and caps, one for paint and one for heavy primer. I sprayed epoxy primer and polyester primer with no problem. I used the touch up gun several times to paint a few air cleaners and it worked nicely also. I use a turbine paint set up for painting cars, but if I had to, I think this gun would work fine for shooting a complete car.