Ok, I imported my FN FAL model into fragmotion and then into milkshape (as an ms3d file) aswell as the stock commando. I then scaled down my FAL to the correct size. I then rigged it to the correct joints to get this (I've mirrored it in fragmotion since)
I had also set the material indexes appropriately (I have to make a new material because the animated weapon had only 1 texture, both hands and weapon)
I then saved my model as an ms3d file and opened it up with fragmotion to then be exported as a .x file, I copied all of the content I'd used (exept for the ms3d files) into the gamecore/guns/custom/fn fal.
Thanks
Pololflece
Rust Pack WIP here http://forum.thegamecreators.com/?m=forum_view&t=178788&b=24