This is a Forgeworld Tarantula (Missile Launcher) from their Display Cabinets at GamesDay 2005.
![Hyperios Air Defence Platform on display in the Forgeworld cabinets at GamesDay](https://i0.wp.com/ifelix.net/wp-content/uploads/2020/02/IMG_1892.JPG.jpg?resize=840%2C573&ssl=1)
This is the same missile launcher that can be found on the Forgeworld Whirlwind conversion kit.
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