Even though Fallout 4 is a treasure trove of unusual weapons, not every gun can be on par with Fat Man. Being a hand variation of the miniature nuclear launcher, this weapon will show you what real fireworks are like and make you fall in love with big explosions in the game. With just one projectile (or more with MIRV modification), this weapon will allow you to fire a mini-nuclear bullet to create giant explosions and deal tons of damage in a decent area, which looks quite impressive.