Hi!
I have come across a bug with the idle animation of the Gatling Laser. When stood in spot with the weapon pointing down, there is a frame in the animation sequence that is totally out of place causing a split second 'jump' of the arms. I have identified the file that would need to edited in order to fix this
Fallout4 - Animations.ba2 - Meshes\Actors\Character\_1stPerson\Animations\GatlingLaser/WPNIdleGunDown.hkx
I would fix it myself but I dont have 3d editing software.
Any other info you requires please let me know.