If you're starting a paintball store or a field, you're going to need to be your own CO2 or high pressure air refill station.  We've got everything you need to do this.  Maybe you just have a good size paintball team that practices regularly; check out the Air Compressor Storage and Refill Combo Package - after this initial investment, it won't take long to make your money back after being able to refill your own bulk tank and CO2 tanks for your paintball markers.  Imagine, never having to pay to fill up your tanks again!