CO2 Magazine Valves

[RLBadKarma]

I have a CO2 magazine for my Tanfoglio Limited Custom that does not release any gas when the hammer drops. I have 3 other mags that work fine. this one will release gas when I tap the valve with the handle of a screwdriver.

I know you can replace the valve on a green gas mag, can you do the same with a CO2? Where might I find valves?

Or is this just going to be a re-load practice mag?

Thanks

Lee

[RLBadKarma]

Thanks.