Mount Half Laife Source

How can i mount hl source??(if i mount it npcs and models from this game will be n gmod??)Also do yu know what folders should i copy from black mesa(the free game)and paste them inot garrysmod/garrysmod to have the models from this game?

You cannot mount HL:S anymore due to it not being converted to the newest Steampipe format. You can still get the content manually by using GCFscape and manually extracting the content.