It is possible to use CO2 on them. I would change the setup though if your going to use co2 though. I'm not sure how CCM's regulators work with CO2 but I would probably use a palmer stabalizer and palmer internals. I'm sure the CCM internals would work, but you would probably need to respring it.
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Originally Posted by freebird
lube the shaft and warm the o-ring up in your hand by rubbing it back and forth between hands. then it should go on easier.