Quad Damage model from Quake 3 Arena. The animations remade identical to Quake.. Floating and Spinning..
Check out the Quake 3 Arena mod project for CS1.6 here : http://gamebanana.com/projects/34995
And if you're interested in working in the project developing maps or models. Contact me and i will further explain the mapping tutorial for the mod to you. Thanks and Enjoy!