Originally Posted by ferret15
either or is fine. I haven't use HPA in a few years and sold my tank because it was out of hydro. With HPA most people only have 1 tank and fills are more expensive. I play on peoples farms basically, and i'd rather have 5 20oz CO2 tanks ready than really on 1 HPA tank. I think its like cost me $12 bucks to get it filled last time where its like $3 for my CO2 tanks. If you play at fields with free fills HPA isn't a big deal, you just go back and get it filled when ever.
For an MR4, I'd say make sure you get the High pressure reg on the tank to be sure.
It cost you $12 to fill an HPA tank?
Every field I've been at/reffed at in the last 5 years prefer you use HPA since, by now, most fields have compressors. It only costs the price of fuel which is minimal to fill HPA tanks, while it costs more for CO2. No field I've ever been to has a CO2 generator.
If the field doesn't have an HPA compressor then chances are they are filling with nitrogen. Even better than HPA. Typically to fill with nitrogen you are looking at $3-$4 per fill depending on your tank.
All that said, I prefer CO2 on my pumps and scenario style markers. Smaller tanks that provide more shots per fill.