I'm sorry but anyone who's bought a Marui pistol generally knows to run 144a gas with it. Be that predator or cybergun. As long as its duster gas. Perhaps a bit of research as to what you were buying would of helped before purchasing it?
Before I buy any GBB I look into their gas efficiency, range, accuracy and durability through reviews. The only time you can run green gas or red gas with a TM is if it's a fully upgraded pistol with a metal kit. This is on your head whether or not you want to acknowledge that is your own problem. Perhaps in future look into what you're buying and d