I bought the primer and the gun from TCP Global.
The primer is Gray DTM Epoxy Prime/Sealer-Kit Kustom Color KUS KIT-KEP505-GL. Comes with harder and reducer. I did what the instructions said and mixed 2-1-1 primer-hardener-reducer. maybe too much reducer???
The gun is a TCP G660025 HVLP with a 2.5 Nozzle with a regulator which I have set to a max of 29 psi, the instructions on the gun said max inlet of 29 psi to maintain a max of 10 psi at the air cap.
I did some testing with a different primer and thought it was setup right, apparently not It really put out a lot of paint in a hurry. There are several adjustments on the gun (air adjustment, pattern adjustment, paint adjustment). I was moving down the car much faster than I thought I would have to, the paint really flies out of this thing.