gun for spraying primer

I will be priming a lot of parts and wouild like to make it as painless a
process as possible. I have heard that there are spray guns that can use a
plastic bag to minimize clean up but I have not seen one. I would also like
to be able to submerge the gun in a bucket of solvent between uses but I
don't think that there is a suitable solvent for epoxy primers. Is there?

What are you guys doing?

Mike
Murphy Moose