Model Request for MG-Rex

I need a Model for Metal Gear Rex, the Metal Gear in MGS. The only Animations I need is Walking Animaton, Attack Animation (Fire out of Rail Gun, and Vulcan Cannons (both pointed out)), And a Death Animation, where it just blows up. Thanks to anyone who accepts this challenge! Heres a good pic of it for anyone who doesnt know what it looks like:

*NOTE*Although Rex in the pic is Green, Rex is SUPPOSED to be Gray and Black*/NOTE*