Green and Red gasses are both considered hfc22. It is just that red is more powerful than green right?
Either Way, My friend uses propane in his Kwc 1911, and it works fine. So if propane is more powerful, that should be ok, since most of the weapons i look at take green, or green and red gasses. (like the mauser)
Thanks for the help, I have been kinda confused on gasses for a while and i am just kinda trying to clarify it...