Yet another reason Blaze SERIOUSLY needs to add a disclaimer in the modinfo description for Vehicle Additions Pack.
It changes most mounted weapons to be manual only. Stand on the space where the gun’s mounted, unwield any weapon you might have, and fire.
Tankmod does the same thing, but it DOES make use of the turret features Blaze added for some weapons. The .50 BMG turret on the atomic mini-tank, the 120mm RWS on the MGS, and the ATGM launcher on the IFV are turrets that act like vanilla turrets.
In general, if it’s mounted on a turret chassis, that means it doesn’t need to be fired manually.