unscrew the tank, this will vent any co2 that is in the marker out the asa
A paintball gun needs CO2 (or HPA) to fire at all.
the safety, take out the co2. Or, just contact the manufacturer or take it to a local paintball shop to get it repaired.
You cant, the CO2 that is in the marker is vented out when you take the tank off.
No, you should only run the G4 on HPA.
A Co2 gun can go up to 300 fps. Sling shoots only get a paintball up to 240.
you need Co2 to fire any paintball gun, it is what physically moves the ball out of the barrel.