For those who use these little cartridges, you know how quickly the price can add up. [steve] takes us through the process of adding a valve to a spent cartridge so it can be refilled.

LISS 12G CO2 CARTRIDGES 12 Gram CO2 cartridge for your Shooting equipment. Easily install the cartridge in your gun for easy use. TOP QUALITY AND CRAFTSMANSHIP Our company uses only the purest ...