8 GRAM CO2 CARTRIDGES ARE ONLY COMPATIBLE WITH THE BYRNA HDAND BYRNA SD.

Our box of ten 8g CO₂cartridges are custom fit for the Byrna SD and HD Launchers. Now including 1 CO₂cartridge with oil for simple maintenance every 10 CO₂cartridges used. Each cartridge (new) will be good for 15-20 rounds (4 mags in a 5 round magazine) at full speed. Punctured cartridges within the Byrna HD will leak over time.

It is recommended to swap out punctured CO₂cartridges and leave an un-punctured cartridge inside the Byrna HD to avoid any compressed air loss. The Byrna HD will puncture and fire the first round at the same time.

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