HFC134a gas (good for 290-310fps using 0.34g 8mm BBs), TOP GAS (good for 430-450fps using 0.34g 8mm BBs), and RED GAS (good for 440-460fps)
People were coming up with funky numbers for enery in joules, wanted to set it straight.
Also the V.2 of this gun is perfectly fine... If someone made a good version of this gun, good grief.