Originally Posted by PC Gamer
Thanks! That worked, but I don't know why it worked. I was under the belief that you could only use TF2 Attributes to remove attributes that were set by TF2 Attributes. However, in this case I was able to use it to remove a static attribute on a weapon. Odd.
I've used that function a few times before and I can confirm that it does work on pre-existing attributes, regardless of who or what applied them. I'm not sure if it has always been that way since I only started using it last year.