This mod adds a pop-goes the weasel sound effect to the laser musket. The sound plays when you crank the musket. To make the mod work properly, you'll have to crank the musket one crank at a time-- in other words, by pulsing R. Holding R plays every sound at once and they run into each other.

Installation:
Edit fallout4.ini from sResourceDataDirsFinal=STRINGS\ to sResourceDataDirsFinal=STRINGS\, SOUND\,
Place the sound folder in your Fallout 4 data directory.
Play and enjoy.