I couldn't tell you how well the gun you spoke of works, I purchased a complete kit from eastwood for powder coating and have only used it once. The problem is baking the parts. Unless you have a old electric stove (cant use gas stove or you may see a big fireball) That you plan to never cook in again then your part of the way there. I practiced on a small door hinge I had laying around and a toaster oven. (don't laugh) Part must be COMPLETLY cleaned or powder coating will not stick and when baking part can not touch anything or you will have a bare spot. In my opinion unless you invest some money into powdercoating it is alot of work. Powdercoating looks realy good but is a pain in the ***. I f I could even find the kit I purchase for somewhere around $250 I would sell it for $70 just to see it go.
Stephen