I have "heard / read" that your local Bicycle Shop can provide you with the same tool for less than one-half the price we often see them advertised for in our favorite Muzzleloading go-to magazines.
its a fact . i have one i bought at the Bike area from Wal-Mart . i think it was 10.00 .
the head is bigger and it doesnt come with the reducer tip with o ring .
the other place to look is in places that cell gun cleaning supplies .
look for Cleenbore Co2 Propelled Cleaning System. they run 25.00 for the whole kit not just the discharger .
there are also other Co2 discharges on the market today . just do a google fot Co2 discharger . then click on photos .
but your still going to need the reducer for most of them ,which by the way you can also buy at cabalas’ and sportsman’s .They sell just the reducer as I have bought them there .
Here are a couple photos
First is a photo of the Bicycle tire Co2 from walmart .
Its on the left . On the right is the old Co2 discharger that cost me 45.00 when they first came out .
now in this photo what you see is i have un screwed the tire adaptor that comes with the Bicycle Co2 and screwed on the reducer from the far more exspensive BP discharger