How to make a CO2 Cartridge Rifle
![](https://www.thegeekpub.com/wp-content/uploads/2013/05/CO2-Cartridge-Launcher.jpg)
Fun things to do with CO2 Cartridges Sometimes you have a problem that needs solving. Sometimes you have something that’s looking for a problem! In my case I am constantly shooting aluminum cans full of BBs and pellets, and have a pile of CO2 cartridges left over. My local trash service will not accept them […]