Even Home Cheapo has good inexpensive spray guns, Gravity , siphon, and pressure types, i found those three types there when i went a few weeks ago to paint the 900, i went with the Siphon, most common that i have seen around that guys have had I know, the gravity is a top of gun bottle, i dont see how one could crawl under and over a bunch of axles and still spray, i have noticed the siphon i bought always leaves alittle in the bottom unless shaken alot, so im going to buy the Pressure gun next its also about 50 bucks ,cheap i think for a spray gun, I would think the pressure gun will give better performance in the situations one would get into crawling around a MV, ?the siphon and pressure look the same as any paint gun, Painting is very easy, I do know that a water separater is a must, and will take the most water out of the line when placed as far away from the tank as possible, i run a hose out 25ft, hang it on a horse and they also have the pressure regulator on em so u dont need to mess with the compressor, then run the paint line from there, i also have found that Alan the paint Man in southern NJ is very very helpful and nice to deal with, and i prefer Arvoe paints too, so those were the choices i found and what i have learned and am trying to learn, Hoping any 2 cents can help, Randy