Well, I decided to take off the Chaingun on my officer class, all was OK, but I hate the throw animation while shooting the buff, the ODF was changed but I kept class parents, I tried to set OffHandWeapon and the other two options to 0, but then I got either a dispenser animation or a crash.

Maybe if I make a custom set of animations using the ones I need from the human tool assets I can override the problem, but, do you know what animation MSHs I need from the assets?

Or maybe there is an easier way to keep the original animations, curiously the animation worked if the officer was wielding a Commando Pistol.