This will be in your map's common folder.
BFBuilder\Data###\Common\MSHs
It will be the ones labeled "com_1st_weap_inf_torpedo.msh" and "com_weap_inf_torpedo.msh".
BFBuilder\Data###\Common\MSHs
It will be the ones labeled "com_1st_weap_inf_torpedo.msh" and "com_weap_inf_torpedo.msh".