weapons equiping ships

why is it that I can put a mass driver on my chiron, an empire LRF but not my archdragon, another empire LRF, I have all 3 mass drivers, T3, T4 and T5.

This is strange.

Please, create a very short video of this problem, but before you do that, check if you have all the listed items in your Armory.

You need to unequip it from a ship first.

you only have one mass driver per tier, so there’s another ship in t5 that’s using it

 

wonder when those weapons will be readily available

You should unequip this weapon befor equip it on an other ship