Quote: "it doesn't matter if I use it for my own game or for counter strike source, which I own myself."
Oh yes it does, unless you made it of which I highly doubt therefore if your original intent was to export it out to FPSC you would've used the Direct-X format.
Needless to say I'm accusing you of using someone else's work for your own benefit.
Checking the model & textures included in Swat.rar, the model is clearly the GSG9 player model from Counter-Strike v1.6, this meaning that you have now leaked that model onto the web, this leading to breaching the copyrights of owning the game, as VALVe does not allow porting media/content from there games to different engines.
So yeah, that means that all them L4D Ports on Garrys-Mod.org that
contain the models are illegal, same goes with everything else that
contain the models.
Also back-seat moderating here(not like I'm already doing it), its against the AUP to distribute models that are copyrighted work of someone else.
3.1 Do not upload, post, transmit or otherwise make available any Content that is
unlawful.