Yes it takes a special gun I purchased for $80. TCP global sells the kit, paint, hardner, and the gun comes with it but if your painting the exterior of a vehicle, buy the higher grade gun for the best results.
My son wanted his Nissan Juke painted so we did that first. He wanted a pretty rough feel so we played around with the air pressure, distance from the car/paint gun, and spray pattern. I did a lot of research on YouTube too...
We ended up at 85 psi, 24-30" from the car, and a small circle spray pattern. I also used about 10% reducer in the paint. It turned out pretty cool. He's getting a lot of comments already.
My truck, I used 15% reducer, 14-18" from the vehicle, sprayed vertical and horizontal and circles to make it blend smooth and kept the same air pressure. I had more waste because of the two tone scheme.
It dries quickly. 3-4 hours to the touch, or taping for another color.... I believe 7 days to fully cure.
Almost forgot, they have an adhesive promoter to help with tight places. That helped with the jambs and emblems. I wanted the embossed look.
We used 80 grit sandpaper to scuff the body, primer etch for the bare metal places, etc... it's a pretty easy process.