==================== Type: Equipment Bug: Lich Very Heavy Fighter is able to mount unintended guns on the Light Turret slot. ====================
This seems like a similar bug I see regarding the Courier. For example, I was able to mount an Auxesia Secondary Battlecruiser Turret. Other turret and non-turret guns were also able to be mounted in the Light Turret slot.
Posts: 3,559
Threads: 107
Joined: May 2012
Staff roles: Balance Dev
Not a bug.
Non-turret guns have recently been made mountable on (most) fighter turret slots in an effort to - in the longer term - do away with fighter turrets entirely so we can use that weapon class a bit more easily for other ships.
Battlecruiser Secondaries happen to be class 1 turrets due to a shortage of classes, which means they can be mounted on fighters but - assuming you are playing on the server and not in singleplayer - flhook-based restrictions should stop you from actually undocking with a Battlecruiser turret mounted on a fighter.