We don't use CO2 to power our GBB's.
We use "Green Gas" AKA Propane or Duster Gas (Difluoroethane).
CO2 will damage your gun unless it was designed to be used with CO2 (CO2 is kept at a much higher pressure than what most GBB's are designed to be used under).
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE