I have 2 of these scopes that I purchased from Natchez. There is nothing on the boxes or scopes as to where they are mfg'd,so I don't know.
I also have a Weaver Super Slam,and the Classic Extreme's glass is every bit as clear and bright as the Super Slam,so I'd say the glass is definitely Japan.The scopes quality,IMO,is just as good as the Super Slam and I have been very pleased with both of the one's I purchased.

If Natchez Shooters Supply is being untruthful in their advertising,and Weaver is also allowing them to post their products as a "Closeout" when they are in fact a newly produced product,both companies are opening themselves up to False Advertisement lawsuits as well as Mail fraud since they are a mail order company. I just don't see both of those companies being that stupid,but you never know!

I have several higher end scopes-Swarovski/Zeiss/Sightron SIII,and the glass in the Classic Extreme's that I have will run right with most of them.