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Quieter Weapons

This addon makes the default gunfire sounds quieter for those who wish to preserve the vanilla sounds but find them obnoxiously loud.
The pumpshotgun pumping sound has also been made quieter so it isn't as loud as the gunfire itself and the sound in of itself is quite loud to begin with.
This mod is kinda self serving as I'm not really a fan of straying too far from the vanilla experience but after playing L4D2 for so long and especially as I've done my rounds in survival I find the default gunfire volume to be deafening and unpleasant.