I dont recall anything too specific, its TM its probly not a metal slide, you can most likly get a metal slide for it easily. I heard somewhere that the newer generation TMs can do green gas out of the box, I cannot confirm if it is true. However I still believe you should be able to use propane on it.
Google gave me this as the first link
http://www.poweredgehawaii.com/Reviews/HiCapa.asp
Green gas is costly, propane is not. They are the same thing.
An adapter for propane is around 25-30 dollars I think, and after that you may use colemen propane tanks to fill your mags. Green gas can go anywhere from 15 dollars and up for a can of it and it will contain nowhere near the amount of a coleman canister.
Google is your friend.