The CGA320 CO2 Fill Device is compatible with every CoolFire Trainer Barrel and ONLY works with Siphon Tube type CO2 Tanks. The CO2 Fill Device screws onto the CO2 Tank to allow re-filling of the CoolFire Trainer Barrel.
IMPORTANT: A CO2 Fill Device is needed to make the CoolFire Trainer function. If you do not already own a CO2 Fill Device, please choose one from our selection of CO2 Fill Devices.
