Why not send/call eotech with the serial number and find out for sure? Seems to me that would be the prudent thing to do in your situation. All Leupold riflescopes are given an individual serial number. Counterfeit scopes often use a fake serial number, all identical serial numbers, or incorrect numbering convention. If you find a scope that is suspect, simply write down the serial number and call 1-800-LEUPOLD to ask if the scope is authentic.
Eotech Sn Lookup
Anyone know out there of a website to enter a serial number off of an Eotech and find out if it is a real genuine article and not a knockoff? I was planning on buying one off Amazon because of the great price and was shocked to see reviews on there of folks who bought directly from Amazon (no, not an affiliate seller on their site) and got a fake. Looks like Amazon corrected the mistake but if even a company of their size and stature can get this crap through their channels then the problem must be bigger than I thought.