Hissing sound

[Wierd-Guy]

When ever I gas up my new Mag it hisses. I can't determine where its coming from. Is it an O-Ring?

[spazzed]

Very well could be. But to help you more, we need to know where the leak is. Down the barrel? Back of the valve?

[Wierd-Guy]

I think its coming from the back area. Any way I can test if it is coming from the valve O-Ring?

[rikkter]

try a few things,turn down your velocity, shoot some. is it stil hissing?

hold down your trigger, still hissing?
get a spray bottle withsome soap, squirt it on and if you see bubble,s thats where its coming from most likely.