BYRNA 12G CO2 CARTRIDGES ARE CUSTOM FIT FOR THE BYRNA HD OR SD WITH THE BYRNA BOOST 12G ADAPTOR AND THE BYRNA TCR. BYRNA 12G CO2 CARTRIDGES INCREASE SHOT CAPACITY TO 30 ROUNDS PER CARTRIDGE.
It is recommended to swap out punctured CO2 cartridges and leave an un-punctured cartridge inside your Launcher to avoid any compressed air loss. Your Byrna Launcher will puncture and shoot the first round at the same time.