Thank you both!
Yeah its from Warhammer 40K...
The yellow vents are gonna be changed eventually, haven't got round to texturing them yet.

As for the maps, there are bump and specular maps (look carefully at the scratches in second pic - but it is a low res render, oh well). I'll amp it up a bit.

Also specular and reflection maps aren't really coming through very well yet, as I have to build an environment to reflect and sort out a better lighting system that the one I've got now!

Keep up the comments people