Byrna 8 Gram CO2 Cartridges + Oiler

8 GRAM CO2 CYLINDERS ARE ONLY COMPATIBLE WITH THE BYRNA SD / EP & HD MODELS. *Not compatible with Byrna LE, SDXL, HDXL or Launchers with Byrna Boost Installed The box of ten (10) 8g CO2 cylinders are customized for the Byrna SD, EP and HD Launchers.  Includes one (1) CO2 cylinder with oil for simple maintenance every 10 CO2 cylinders used. Each cylinder (new) will be good for 15-20 rounds at full speed. Recommendation:  Keep an unpunctured cylinder in your launcher at all times for self-defense purposes.  Punctured cylinders within your Byrna Launcher will leak over time.