Hello dondogs123,
first you need to know which tags the weapon are using.
you could find that out with this program:
Tom_XmodelUtills
from the Tom_bmx
http://tom-crowley.co.uk/and then set it to cod5 game to find the xmodels from cod5 where you weapon also are...
when you found your weapon in the xmodel list then under the program there is a button like with the name something: "tag" if you press these button you will see a small box with all tags that, that models have.
with that tags you could disable that

I hope that I help you out of the problem and otherwise I will hear it from you when get again troubles if you get not working it

best regards,
Gamer9294