The GAU-8 Avenger is the largest gun mounted on a combat jet. The Air Force carries out the reloading process and not surprisingly, it takes more than one person.
This monster can fire 3,900 rounds in a minute and decimates its targets. The gun itself is massive, dwarfing a VW Beetle.
Check out this footage of what goes into reloading this weapon:
Have you ever had any experience with this gun? Let us know in the comments below!