I have used the gun in the picture. It is not a true HVLP gun, even though it says that on the packaging. I have not painted a model with it yet, but was pleasantly surprised at how well it worked for touching up cabinets. I was using latex house paint, and it atomized nicely. The fan and paint controls worked fine. I used a regular compressor at about 40 psi. For model car bodies, I think you would have to close down the paint supply, and probably reduce the pressure. Even then, I suspect it would be closer to a rattle can than an airbrush. The trick would be using low enough pressure to get good control, while still getting good atomization. The cup holds several ounces of paint, way more than would be needed for a 1/25 car body. All that said, I do intend to try it for models. If you beat me to it, I would be very interested in your report on how it works. I think it might be really good for larger scale cars, and if I ever build my 1/72 scale B-52, I will see how it works using several bottles of Metalizer!