MPC-15 Potato/Ping Pong Ball Cannon model. It comes with a pneumatic trigger. It has a detachable barrel measuring 36" x 1.5". This easy to handle Potato/Ping Pong Ball Cannon can shoot well over 100 yards on every shot with compressed air as the fuel. It features a sharpened barrel for easy loading of potatoes. It accepts the full line of M Series interchangeable barrels. See the barrel section for more choices. Cannons are shipped Pre Drilled, Pre Glued and unpainted. To avoid possible shipping damage, some easy final assembly is required. No special tools or parts are needed. The cost of the MPC-15 Potato/Ping Pong Ball Cannon blueprints are: $20.00