Browse Just Airsoft Guns’ great range of CO2 magazines for your airsoft pistol. Pistol CO2  mags use natural gases to pressurize the pellets in your gun, leading to a quicker, more powerful shot. When you really want to pulverize that target, pistol CO2 mags are the only choice that will also improve your skills as a gunman. If you’re looking to recreate the experience and advanced skill set of live fire shooting, your pistol needs to be equipped with a CO2 or gas magazine. With the right equipment, you’ll notice the difference immediately – and with the enhanced stopping power gas and CO2 adds to your shooting, so will your enemies.