Byrna 8 Gram CO2 Cartridges and Oiler kit

Custom designed to fit the Byrna HD, our box of 10 8g CO2 cartridges includes 1 CO2 cartridge with oil for maintenance. Every cartridge is good for 15 - 20 rounds at full speed. Because punctured cartridges will leak over time, we recommend that you swap out used cartridges and leave an unused one inside to avoid any compressed air loss. Cartridge will puncture and fire the first round at the same time.