MBTS-30 T-Shirt Cannon model. It comes with a pneumatic trigger.
It has a fixed barrel measuring 36" x 3.0". This easy to handle T-Shirt Cannon can shoot your team T-Shirts into the crowd on every shot with compressed air as the fuel. It can be upgraded to offer an on board charging system that can be hooked up to a remote source of compressed air without the chamber being constantly charged. No special tools or parts are needed. The cost of the MBTS-30 T-Shirt Cannon blueprints are: $20.00