Quick Change 12 Gram 12g CO2 Adapter-Silver
This Up for sale is a device that allows the use of 12 gram CO2 cartridges in any marker with a standard ASA tank thread.
Nothing elaborate about using it. You just attach the front piece to the standard ASA, slip a 12 gram CO2 cartridge in the rear tube, and tighten.
The cartridge is pierced and the CO2 flows into the marker...