It has been brought to my attention, that pretty much everything I am using in my map is HL2 models and textures. So far, the ONLY TF2 items I have are, the resupply cabinets and the fence. I have also been informed that people who do not have HL2 will not be able to see these models and textures. So I assume then that the models and textures are not packed in the map, but are referenced to via install locations on the users HD. If that's the case, how is it possible that people can make and use custom models? I've never downloaded one seperatly, that I know of. I am also inclined to disagree with the above notions, as the textures nodraw, player clip, trigger, hints, etc are all HL2 textures, and they seem to work fine and not create errored sections on somones game who does not have HL2. But I don't know, I have both.