Quote Originally Posted by Blackhand View Post
Sounds like a game bug. Load earlier saves to see if at any point the sound starts working again, try figure out what specifically broke the sound on the weapon.
Yeah I did load up a previous save and the sound was working. I think it was one of the rate-of-fire upgrades on that gun because I don't remember using it again after that. After quite a lot of progress I used the gun again and only noticed then that the firing sound was missing .