Precursor weapon systems

I cant quite figure out why my precursor weapon systems wont let me equip them… It does not say I require anything to equip them.

Ships can only be equipped with items of the same tech lvl or lower tech. If you try to install those T4 weapons on a T3 ship or lower tech they wont fit.

If you need new equip you should buy stuff in the equip tab. There you can only access items being able to fit your current ship.

/answered and closed.