RB40 MK3 Ball Launcher Adapter, 40mm Launcher, 2″ Tennis Ball/Stress Ball
Ball Launcher Adapter for the Sizable Designs RB40 MK3. This adapter allows you to launch 2″ tennis balls and 2″ foam stress balls. For the stress balls, you can use green gas, propane, HPA, and CO2, as long as you don’t overfill the shell with gas.