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I dont own this is JayXsane I didn't mod this our anything i am just posting this here becasue i noticed that there isn't alot of infected mods here so here you go.
This a skin and Sound pack Copy Paste this to your Steam/SteamApps/Common/L4d2/l4d2/Addons and check it in your addons in game.
full leeroy charger.vpk
More addons by AarynCageTheMtgGamer