AN on/off asa alows you to cut the air from your gun by usualy unscrewing its self from the asa and the alowing the pin on the tank to be in the off position(when pin is depressed it will let off air). You will hear a hiss eventualy of the air that will come out but usualy there is still air in the gun and depending on the total volume inside the gun it can hold even 4 or more shots. The best thing to do is shoot the gun after it is degassed until it cant shoot anymore. Lastly make sure there are no paintballs in the breach since it can mishape and if you decide to shoot it thinking there is nothing in the breach you can cause damage.
Be careful with the on/off though , if you unscrew it out completly and you didnt compleatly degass the gun it can launch its self out(happened 5 times at a field). It might hurt (nobody got hit by it)but could get lost.
As stated below some guns once degased will not shoot anymore.
Thank you maj tom for this quote on the most markers this applys for
"Yes, most unregualted markers once the tank is removed so is the pressure. Regulated markers such as the ION still hold enough air pressure in the space between the reg and firing chamber to fire several shots."
its simple but i see it alot and i shot my self many a time because of this.
This post has been edited by Gwac: 01 January 2007 - 06:12 PM