Newshound wrote:

however, just get air fills from a SCUBA shop instead of CO2. It's
cheaper as well.

Make sure they don't give you 3000 psi though!

I'd hope anyone at a SCUBA shop doing fills would understand tank
ratings, particularly if they have purchased the adapters to do
paintball tanks. Of course you could also get a SCUBA tank and regulator
with the appropriate QC adapter and have a nice large regulated air
source.