Space Army double laser canon turret

Assembly-hatch goes on top either glued down or pinned open to allow for a crewmember to be inserted. Space ring and shaft go on the bottom, spacer may require light sanding on the inside to allow the shaft in. Fits both new Leman Russ kits from GW and the older ones as well. Will need a bit of weight on the back end (it's front-heavy).
Update: a nice steel washer replacing the spacer seems to balance the weight fairly well.