Stupid Airsoft tries CO2 power chambers on the Action Army AAC-C1 to find out how much power it can produce. The initial green gas test showed weak performance, yielding low muzzle velocities of around 250 FPS and suffering from inconsistency due to gas cooldown. The experiment then shifted to the CO2 shells, which are color-coded (M130, M150, M170) and use smaller 8-gram cartridges to release escalating amounts of gas.