The Byrna 12 Gram CO2 Cartridges – 10 Cartridges are custom fit for the Byrna HD Launchers with the Boost adaptor. Each cartridge (new) increases to a 30 shot capability at full speed. Punctured cartridges within the Byrna HD and Byrna TCR will leak over time. It is recommended to swap out punctured CO2 cartridges and leave an un-punctured cartridge inside the Byrna to avoid any compressed air loss. The Byrna will puncture and fire the first round at the same time.
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