That's what Fulcrum says about the Tokyo Marui MP7 GBB in this video review. Find out why by watching it... "In this airsoft review I take a look at the Tokyo Marui MP7 GBB airsoft SMG, which is one of my father's airsoft guns and our newest airsoft gun in our airsoft collection. I discuss our experience and opinions of this airsoft MP7 and why we think this airsoft TM MP7 GBB is an awesome bit of kit!

NOTE: Whilst I personally believe that Abbey Predator Red gas is effectively a green gas, don't take this as an official confirmation. In our experience it performs like any other green gas we've used, maybe slightly more powerful or at least less sensitive to the cold. But it's much weaker than any black gas and doesn't seem to be that much more powerful than green gases (red gas is supposed to fill the gap between green and black). And we've tried Abbeys Duster gas which comes in a green labelled tank, this stuff is not designed for the cold nor could we get anything to work on it unless we were in the bloody Atacama. Please be responsible with gases, follow manufacturer's guidance."