Yesterday I had some spare time for tinkering, and an FWB C6 and a pile FWB spare parts laying around at a convenient reach. That ended up with a little modernization of the old C6. Switched out the co2-tank connection on the C6 with the equivalent air connection/regulator for a C55P. I turned the output pressure of the regulator down to 65 bars, did a little adjustment of the choke screw, and voila: A C6 that breaths air.
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