Freds 73 Scamp restore on a budget
Akzo noble 512x310 high solids impact resistant urethane compatible light grey epoxy primer is what I get out of date from work. Its an Aircraft primer with a 1 to 1 mix. Clean your paint gun out with MEK quickly afterwards. This stuff drys like ******* concrete. Covers well in 3 coats. Is also sandable to put a high build blocking primer over it.