I just saw that in the rule book faq
Q: When a Damaged – Weapon Destroyed result is
rolled and a weapon is destroyed are any built-in,
combi or co-axial weapons attached to it also
So I was wondering what happens when you destroy a turret on a razorback that contains a lascannon and a TL plasma cannon. Are they not considered co-axial weapons, since they are on the same turret? Are they both destroy or only one of them?