And here is another bug, hurrah! It's a new one this time, a wicked little vermin that stops me to use the Gatling Laser and the CZ57 Avenger. Indeed, these two weapons cannot fire in my game (what a joke!). Very annoying. Other automatic weapons are not concerned. I googled this bug but I have found nothing. As usual when I meet strange bugs, I disabled all my mods but the problem has persisted until now.
So, well, once again, I'm asking for help my dear Gunners, save me from this horrible bug! I'm not done with FNV yet.

Perhaps an animation problem, I'm not sure if the two are connected but have you tried Archive Invalidation? (I know that sounds obvious but I've made silly mistakes in the past) Also what mod manager do you use?

I think it's a Vanilla bug, the kind of bugs we can do nothing against... I use Mod Organizer.

I also use MO, I guess if it's a vanilla bug all you can do is reload. Hope you get it working. Have you tried an animation replace for minigun animations? (Though I'm not sure they exist)

@LordGeneralCheese I have played FNV for a long time now and I just met this bug yesterday. I'm going to reinstall the game in Windows 7, and maybe I will have more luck. Thanks for the help!

No problem, tell me if you get it working! I use Windows 8.1 myself.