06-18-2011, 01:08 PM
I don't know anything about ripping the models from the game, but quite a lot of Metroid Prime models have already been converted to Garrys Mod. You just have to deal with the Half Life 2 model format.
http://www.garrysmod.org/downloads/?a=view&id=46861
http://www.garrysmod.org/downloads/?a=view&id=62877
http://www.garrysmod.org/downloads/?a=view&id=89423
http://www.garrysmod.org/downloads/?a=view&id=121527
http://www.garrysmod.org/downloads/?a=view&id=89422
http://www.garrysmod.org/downloads/?a=view&id=80061
http://www.garrysmod.org/downloads/?a=view&id=62920
http://www.garrysmod.org/downloads/?a=view&id=89419
http://www.garrysmod.org/downloads/?a=view&id=46716
http://www.garrysmod.org/downloads/?a=view&id=46861
http://www.garrysmod.org/downloads/?a=view&id=62877
http://www.garrysmod.org/downloads/?a=view&id=89423
http://www.garrysmod.org/downloads/?a=view&id=121527
http://www.garrysmod.org/downloads/?a=view&id=89422
http://www.garrysmod.org/downloads/?a=view&id=80061
http://www.garrysmod.org/downloads/?a=view&id=62920
http://www.garrysmod.org/downloads/?a=view&id=89419
http://www.garrysmod.org/downloads/?a=view&id=46716