HFC is short for hydroflourocarbons:
https://en.wikipedia.org/wiki/Organo...ofluorocarbons
so if you just say HFC that's just a category of compounds. If you are referring to what is commonly used as airsoft gas in duster gas, it is HFC134a. The 2 items by themselves technically don't mean anything relevant to airsoft usage.
It's like going into an auto parts store and asking for fluid.
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I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.
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