Not that I have tried, but I have thought about a small and light weight air system in a DD. Use a spurt gun, smaller than a normal gun, saves room and weight. Use a copper accumulation tank for the air supply. You can fire your one spurt off of it, it will not take up more room than a disposable tank, no regulator needed either. Just build a port with a one way check valve into the super structure for refill and pressurize it before battle, or connect your tank and regulator if you are trying to tweak a gun. If you have your gun fill port and the air fill port above deck you don't have to take the deck off between sorties either.
Tried that setup back in the MWC days with s spurt and accumulator tank. CD did not allow as there was no regulator on board as per the rules (long story, we tried to get it passed). Lesson learned, get approval before heading to an event. Spurt guns are just not fun in my experience, they don't hit hard after the second BB and you spend a lot of time for a "one and done" shot. 50 round is at least worthwhile. We tried flexible tubing, but maybe the quality of hose but on hot/cold days we had leaking issues.
