- if your can doesn't say primer, it isn't
- duplicolor sandable primer is inexpensive and good
On a personal note I have switched from Citadel (too expensive), to dork tower (worst spray paints ever made, unless you enjoy stripping fuzzy paint globs from 90% of what you paint*), to krylon black spray (good but not really primer), and have ended up on duplicolor. Haven't regretted the switch, although I have run into instances where even my fingernails will rub primer off of a metal model. I have a feeling that this has less to do with the primer and cokenails and more to do with me generally not washing minis before assembly. Fuck you mold release agent!
*I paint in my basement** with a dehumidifier, so humidity is not the problem. I also always hold the can upside down and spray until clear mist comes out after use to clear the nozzle, so that's not the issue. The issue is that this truly is the shittiest paint ever.
**I'd fuck me***
***yo dawg, I heard you like foot notes....