I have never bought an expensive primer gun as they seem to get beat up the worst as some of this 2K primer is a bitch to clean .
I can see this 3M gun being a nice item for a big production shop , but for a do-it-yourselfer its a bit on the extreme in my opinion .
I have always said buy the best PAINT gun your money can buy for shooting color and clear , but for blowing primer a decent HVLP cheapie will suffice , hell you sand the shit flat anyway ...... LOL