This is the old Citadel Orc War Wyvern, which is from the Games Workshop archive and was on display at Warhammer World.
An early release for Warhammer, I do in fact have one of these, somewhere! I remember having real issues gluing the wings using an epoxy resin glue, which I used back them to stick models together. Even then I then added lots of Milliput to keep them attached to the body. Today I would probably need to pin the wings to the body and use green stuff to fill the gaps.
I don’t appear to have a photograph of my model, maybe I should dig through my storage boxes and see if I can dig it out.
I really didn’t like the new Taurox Prime from Citadel, however I do think the Astra Militarum Wyvern is a much better designed model.
The Wyvern Suppression Tank exchanges the Hydra’s anti-aircraft autocannons for a pair of twin-linked stormshard mortars. The tank excels in the claustrophobic environment of urban warfare, raining curtains of shrapnel down upon enemy infantry with ever exposing itself to harm.
This plastic kit can be assembled as either a Hydra or a Wyvern with 2 crewmen: a gunner and a spotter and has the option to equip a heavy bolter or a heavy flamer.
In many ways better than the Hydra, which you can also construct from the same box. Possibly a little tall, but that’s probably the only thing I don’t like.