Thousands of visitors flock to the world's biggest machine gun shoot The Machine Gun Shoot and Military Gun show attracts thousands of visitors from across the United States, and around the world. Machine gun owners can reserve spots on the main firing line, but the waiting list is up to 10 years. Started in 1965 by Biff Sumner and friends having a cookout and shooting machine guns, it grew into the biggest machine gun shoot in the world.