Добавил: The DSystem
It originally had a gasmask, but that model didn't have the right animations
so i skinned the face too. The gasmask one is released for GarrysMod posing.
(Look at : http://forums.facepunchstudios.com/showthread.php?t=428943)
Extract the folder to
\Program Files\Valve\Steam\SteamApps**STEAMNAME**\counter-strike source\cstrike\
Have fun. :)