A while back some person had a discussion on removing a patched ball from a rifle. I think it was a flint rifle anyway the discussion led to the CO2 discharger and that the poster could not find an adaptor to work with a flint rifle. I posted my answer which was that one could be made using brass hobby tubing and some round brass rod. I said that when I get some extra time I would make one and post it. Here is the adaptor that I made using about $4.00 worth of material. Even though the cost of material was very low labor is what took most of the time. I did not have any 5/16" brass rod on hand so I took a 3/8" X 2-1/2" X 4" piece of bar stock and cut a 3/8" X 3/8" X 4" piece out of the block and then put it in the lathe and turned it to 5/16" diameter. After that I proceeded to cut the tubing and soldered everything together. The picture with the CO2 discharger and it's original accessories was purchased in 1999 or 2000 and have used it a few times with great success. The last time I used it was about 15 years ago and I left the CO2 gas cylinder in the discharger. I pulled the trigger on the discharger the other day thinking that the gas cylinder would be empty but to my surprise it emitted a loud and long gas burst which startled me. It had enough force to propel a ball out of a barrel very easily.