Skorpius Hover Tank
A vehicle utilized exclusively by the Skitarii, the Skorpius basically serves the same function as a Rhino, with both transport and battle tank variants. Except it's a hovercraft. Not fancy anti-grav tech either, it's pretty much just a conventional hovercraft. Apparently using big-ass fans to float an armored vehicle on regular old air (something we can do in friggin M2) is now, and we quote: "barely understood, deadly technology from the Age of Darkness."
Skorpius Dunerider
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The Higgins Boat of 40k, the Dunerider works exactly the same as the WWII Landing Craft that inspired it: hit the beach battlefield, suppress enemies with the many stubbers mounted on it, and then drop the front ramp and have the Skitarii within re-enact the opening scene of Saving Private Ryan. It's basically a smaller and more advanced version of the Gorgon Armored Assault Transport.
Skorpius Disintegrator
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A battle tank variant of the Skorpius. Looks similar to a rubber duck, oddly enough.