|The following is based on Fallout: Brotherhood of Steel and has not been confirmed by canon sources.|
“Imagine seven shotguns strapped together, all firing at once. Imagine aiming it a mutant. Now, imagine having to clean up the mess.”
The Shredder is a type of Big Guns shotgun using large bullets as ammunition. It's one of the most powerful weapons in the game, despite its slow reload period. If equipped, the Initiate cannot dodge and it uses 10 ammo per shot.