|3.5" Bag gun|
The 3.2" bag gun dates back to 1898. It derives its name from the size of the powder bag used to propel the projectile. The specific cannon used in the show was an authentic model from the Rock Island arsenal used during the Spanish-American war. It was probably used during Theodore Roosevelt's charge up San Juan Hill.
The cannon has a length of 7½ feet long, and a weight of 829 pounds. The contestants fired aluminum projectiles with a weight of 4.6 pounds.