Check the listing for details. Guard Dog Security 12g Co2 Cartridges Non-Threaded CO2 cartridges BB Gun. Condition: New. Listed at 41.99 USD. Guard Dog Security 12 Gram Co2 Cartridges, Non-Threaded, CO2 cartridges BB Gun, CO2 BB Pistol, CO2 Airsoft Pistol, and CO2 Paintball Markers, Snug fit, Solid Seal (Pack of 25) CONSISTENT POWER DELIVERY: When it comes to powering your Airsoft BBs or playing in a paintball tournament, you need stable and reliable power output. Each cartridge can deliver up to 200 shots. With enough CO2, pressure, and strong airflow, you can shoot at a rapid rate, as fast as you're ready to make it, without worrying about fluctuations in power UNIVERSALLY COMPATIBLE: Guard Dog CO2 capsules are compatible with most airguns that require C02, like a C02 pistol, CO2 gun, CO2 bb pistol, a CO2 bb gun, a CO2 pellet gun, an airsoft gun CO2 , airsof rifle CO2 , paintball markers, or paintbal guns.