This pack of ten 8g CO2 cylinders is specifically designed to fit the Byrna SD, EP, and HD Launchers. The box now includes one CO2 cylinder with oil, providing easy maintenance after every ten cylinders used.

PLEASE NOTE: This CO2 is not compatible with Byrna LE, SDXL, HDXL or Launchers with Byrna Boost Installed. It is recommended to keep an unpunctured cylinder in your launcher at all times for self-defense purposes. Punctured cylinders within your Byrna Launcher will leak over time.