I bought one of the 4 OZ HVLP guns at Harbor Freight for under $14.00 and painted my last two planes with it. About the perfect size gun for our use. I have used it for the main colors only and used Latex House paint and Klass kote. Worked well for both those paints. Once I get the main color on a plane I use an air brush because I really suck at painting the trim. Well, painting is easy but I have a heck of a time masking so I play it safe.