What i am basically hearing is that KWA is warning not to use propane. My guess is that more of their guns are going down with the use of Propane so for them to take that out of the Problem line. It is just easier to say NO PROPANE. Daywalker is correct in his statement. One thing I will add though is the the pure propane is under more preasure or at least seems to be in all our comparison tests we have done between the 2.
I actually had to make people stop using propane in their pistols since it shot their fps up over the CQB limit. Which I also guess would cause KWA to tell people not to use it in their guns. Since the more pressure the better chance of them failing.
Well that is my 2 cents on the subject.
jon
