Why does the c02 on my paintball leak a little when i unscew it?

Question

it bursted out a little air and i got scarred so i just left it alone untill all my c02 ran out and now i have to go refill it

Answer 1

When you disconnect the Co2 tank from the gun, the tank is turned off but the gun is still pressurized.

When the Co2 tank is about to be unscrewed completely, the O-Ring seal on the tank becomes unsealed and the pressure in the gun vents.

It is Completely normal.  

If you do not want it to vent as much gas, with no paintball and your barrel bag on, dry fire the gun while unscrewing the Co2 tank.  This will drain the pressure in the gun and will give little to none vents of Co2 when taking the Co2 tank off.

Answer 2

Look on the top. Do you see a little button? That is pressed to release air, just take it off quick and get used to a little air burst, its usually just decompressing or giving air without a seal to hold it in the gun. Just press the button with the corner of a table or something and you will understand alot more.

Answer 3

b/c of air pressure