i'm looking at changing site markers from co2 to air,got a good deal on bottles so far but not sure which compressor i would need.looking for a 4500 system bot dont know which makes or models to look for .any help would be good.
Bauer is the most commonly used compressor that I know of. If you go to a sizeable event like a PSP or NPPL, they always have a booth for info, pricing, and ordering.