Fat Man Little Boy Kit

 is a weapon mod for Fat Man (Fallout: New Vegas) in Fallout: New Vegas.

Effects
The  is a weapon modification for the Fat Man (Fallout: New Vegas) in which the weight of the Fat Man (Fallout: New Vegas) is decreased by 50%, making the new weight 15.00 instead of 30.00.

Locations
This weapon mod can often be found at the Gun Runner store between levels 14 and 17 and sometimes at level 18+. It can also be bought at the Silver Rush.

Behind the Scenes
The Little Boy was one of the two atomic bombs dropped on Japan during WWII (the other being the Fat Man).

Appearances
The appears in Fallout: New Vegas.

Bugs
In order to get the benefit of the reduced weight, the modified Fat Man must leave your inventory and then be re-added. Since this is not done automatically by the game engine, you'll need to drop it, give it to a companion, or place it in a container, then take it back.