My own fault, but yesterday I lost my BS to edencom gunstar batteries when I jumped into a invasion system without concentrating.
Im my panic to get back to gate (at a mere 10 m/ps) I neglected to even try and kill the guns with my weapons. Looking at Zkill it show no losses, but the description is destructable gun. I also went onto SISI as I wanted to test this but SISI doesnt seem to have any invasion systems.
Can i assume that becasue zkill shows no losses that it is generally impossible to kill these guns.
also i noticed on my KM that it shows 1 ship, an Elite Federal Navy Thalia as the only ship on my KM, I saw no NPCs there, just the 3 Gunstars which had me locked and were firing on me.