In case any potential EOTech buyers haven't seen it, here's a link to some info about counterfeits. Thanks to Gundoc for posting it over in his subforum.
http://www.perfectunion.com/vb/great-west-gunsmithing/82953-counterfeit-eotechs.html
http://www.perfectunion.com/vb/great-west-gunsmithing/82953-counterfeit-eotechs.html