Whats the deal with customized weapons?
I was under the impression that if you customized a weapon....it was not a problem...if you traded or sold it...the customization was just erased from the weapon itself.
However....I ran across one particularly rude punk ( I AM being nice!) who seemed to think that I was trying to cheat him in some fashion...how I don't know. But he claimed he would not be able to use the weapon after it was sold and transfered because of the customization.
Is this true? ...can someone please clear this up for me?

thanks