Switching valves

[Hotshot33610]

I have an RT pro, but the field 5 minutes away from my house just closed, leaving me with no practical way to get N2. Would it be possible to get a classic valve, and switch it with the RT pro valve to change between CO2 and HPA?

[sumorai]

From what I've seen, you can pick up a regular scuba tank for ~$150 and then get it filled at a scuba shop for $4 and that'll last a looooong time. Be your own N2 fill station.

[Jaan]

Used classic guns are cheap ... why not just buy one for a backup / CO2 gun? The valve is basically the gun anyways, the rest of the parts arn't worth as much. That way you could put an expansion chamber on it and make the gun run very well on CO2. Taking the valve on and off seems ghetto to me.