A few years ago I used a spray gun similar to that sold by Harbour Freight for $9.95. Mine came from Princess Auto a Canadian company but looks identical. I used it to paint my daughter's Suzuki Samurai and my 1972 Chevrolet pick up. The Samurai worked out great, but the larger surface area of the pick up challenged the capacity of the small gun to keep the working area wet enough. It suffered significant orange peel. Nothing that too many hours of colour sanding did not fix. If you use a cheap gun, be prepared for extra work.