Spoiler alert. tank armament

so, on the new island, when completing one certain mission outside a cave, there is a tank waiting for you there, with a massive “thing” hanging between its legs, railgun-isch looking? i killed it but when i came to loot its weapons were gone. and i have not seen anything like it after that mission either. does anyone know if it is possible to get one to spawn again?

10 posts were merged into an existing topic: The Tank has a Railgun