This is a small/Simple mod that adds the classic little boy mod back to the Fatman,like the previous games i enjoyed using the Fatman, but one day i was playing fallout 4 in survival mode and looked at my inventory and I saw my Fatman sitting there, at 30 pounds its a very heavy weapon to tote with you along with the Mini Nukes. So i took it to the nearest weapon bench and as it turns out you can only equip the standard and MIRV upgrades but no Little Boy like the previous games and to be honest it made me not want to use it at all because it was so damn heavy.

In the previous fallout games the little boy mod reduced the weight of the fat man by half or 30 lbs to 15 lbs and i kept it that way for lore friendly reasons,so now you can craft the Little Boy mod at a weapon workbench, only Perk Requirement is Demolitionist lvl 3 and some components.

Let me know if there are any bugs.