Have a quick read. And if you are CERTAIN that I'm wrong, again, call Glock in the morning and see what they say.
http://forum.gon.com/showthread.php?t=411432
Your link shoes nothing except a GON thread I posted in. Calling Glock will provide no information as the people who answer the phones won't tell you anything about business practices.
I'm laughing at the idea that you don't know the difference from an import mark and a proof mark.
We will just have to agree to disagree, there is clearly no way I am going to convince you that you are wrong and vice versa.