Big Boy

The Big Boy is a unique weapon in Fallout 4.

Characteristics
The "Big Boy" is a Legendary Fat Man with the Two-Shot Mod, allowing it to shoot two mini nukes at once for the cost of only one, giving it the most damage potential from a single shot in the entire game.

The Big Boy is compatible with the Experimental MIRV mod; the Big Boy will shoot an astounding ten mini-nukes, while only consuming one. Be aware that the blast radius from shooting this is substantially larger than normal.

Variants

 * Fat Man

Locations
Can be bought from Arturo in the Diamond City market.