The Spray Cannon is a weapon featured in POSTAL. It is an automatic shotgun, and uses up the same ammunition as the standard Shotgun. It is one of the more powerful weapons due to it's high fire rate and average accuracy, but eats up ammo quickly, has low range, and (much like the shotgun) the player cannot move while shooting.
In Redux, it no longer shares its ammo with the Shotgun and movement while shooting is possible.
- The Spray Cannon is based off from the Atchisson Assault Shotgun, commonly known as AA-12.