Thought I'd go ahead and add my first Mod to Nexus. This mod was a request from my Best freind's son Wolfenstinkle [ps4].
It's pretty cool IMHO. I utilizes only in game resources so its super small , like 130kb. It was tough to figure out for a first time modder, I feel. Initially I wanted to make one gun that shot all the different colors of fireworks. I soon realized that would be problematic because not only would I have to populate ammo cans with all the individual colors of ammo, but there was no ability to use multiple ammo types in one weapon. Perhaps it can be done with scripting, I just don't have a clue. So I decided that splitting them up into separate guns would be the easiest solution.
 
I'm not sure how lore friendly this is but it occurred to me that Concord looks to be celebrating its tricentennial and I imagined that some special fireworks display would have been planned. A few years later some crafty raiders made some cool handheld weapons to celebrate their own way. They stashed them around the town in true rider fashion, out in the open.

More than likely if you don't kill all of the raiders that re-spawn in Concord first before looking for the Launchers, one of them will probably find one first. Be careful those suckers pack a punch!

I included some pictures of key locations in the gallery. This should help in your Easter egg hunt.
In addition now Raider loot boxes throughout the Commonwealth will have a few missiles in them.