Usually found at: C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf\custom
Use 7-Zip or WinRAR to extract the contents of TF2moddedwpns.7z . TF2moddedwpns.7z
(Optional) Custom .ctx files for use on servers with sv_pure 0 . TF2moddedwpns.7z
Unique audio for firing, reloading, and impact. TF2moddedwpns.7z