I have a 0.2l CO2 bottle for a Tau 7 pistol and am struggling to find someone to refill it.

The gun is currently running on 12g CO2 cartridges but the bottle would be more convenient.

Can you still get the bottles filled or is it pointless looking for someone to fill it. I've tried the paintball people, gas suppliers etc in the Middlesbrough area but come up empty handed so far.

I can always buy more 12g cartridges if I have to.