Here are all the old TFC/HL files before Team Fortress Classic update released - 12 AUGUST 2013:
-Old SSG kill Icon
-Old SSG Slot Icon
-Old Muzzleflash (fixes sparkly nails)
-Old Shotgun and Ammo pickup sounds
-Old Shotgun Shell
Put the folders in...
Thought it was worth submitting.
Put in: C:\Program Files\Steam\steamapps\ACCOUNT NAME\team fortress classic\tfc\resource
[Discovered this from meisteh's upload/post over at ozfortress.com in the customization section.
Altough he wasn't the first to come up with this (at least I don't think so), I don't like taking undeserved credit.]
Readme Fix: I forgot to put the + in the Hold script binds.