Looking for a 12v high cfm air compressor

[m1506m]

I'm trying to come up with some fun summer projects for the team, and want to have them start on a tshirt cannon. But the one I have in mind is going to be a multiple barrel design, going on an old tank tread chassis. In order to keep up with the air requirements, we are going to need a higher volume compressor.

Anybody that has done similar in the offseason, what did you use. I just don't want to fry our comp. legal compressors.