est models. The SDKFZ 222 and BA10 both use a similar approach to that taken with the KV's turret.
Maybe it's because they're designed to be snap fit? Anyhow it's made up of 8 parts all hanging off the central skeleton which incorporates the main gun and rear mg. the parts need some careful cleaning up as all the points where the sprues connect are on the inner chamfered edges. Failure to clean them up well, will mean the edges won't sit together cleanly.