it's time to do my ebay rescue Predator. ... but unfortunately the turret was glued down.
There's always the freeze and lever trick to break superglue bonds; stick it in the freezer for an hour or two which should weaken the bond quite a bit; you should then be able to twist it apart. I've also found biostrip 20 does a good job of weakening superglue when I'm stripping paint.
It looks to be (a lot of) plastic glue. It arrived unpainted - I based it when there was some good weather, so thankfully no stripping needed.