The no maya way to import guns from cod 4 is
1. Get the cod4 modtools
2. Get tom xmodelviewer utility
3. Get xanim converter
4. With xmodelviewer export the gun what you want and with these files make a gdt in assman in WaW
5. Convert the xanim to cod 4 to waw
6. Emmm enjoy ?
I never use this method xdd
Just use tom's xmodel mover.
And xanims work directly.
Just keep in mind CoD 4 cosine/spec maps don't work directly in waw, think you need to switch them in the image.
EDIT: Well technically they work, just won't look right.