I have an ambition to get a 48cu in HPA paintball tank, 3000 psi fill regulated to 850 psi output and hooked up with my recently acquired 4500 psi remote coil/foster to the bulk fill foster on the AR.
Since I'm currently running this setup sucessfuly on a 20 oz CO2 tank I believe the HPA would be sucessful. From what I've read, everything inside the AR should function safely. I also expect to see a minor power increase compared to CO2. My question is how reliable is the 3000-850 psi regulator that comes on the paintball HPA tanks, like the this one
http://www.paintballgear.ca/product/..._HPA_Tank.html ?
Should I be worried about it failing and pressurizing the QB to 3000 psi?