Degassing Tool, Fits Benjamin Marauder Air Rifle Degassing tool Removes air or CO2 from the reservoir Fits the Benjamin Marauder rifle (does not fit the Marauder pistol) Armada, and Gen 2 Fortitude rifles If you need to release air from an overfilled Benjamin PCP rifle, the degassing tool will make the process a snap. Please refer to your air rifle's manual for detailed use instructions.