Historical document archive: This article preserves internal material published by Primary & Secondary in January 2016 concerning performance problems in certain EOTech holographic weapon sights. It is retained because the documents and procurement history remain useful primary-source material—not as a claim that every current EOTech product has the same characteristics.
The contemporary concerns included thermal drift, cold-weather distortion, moisture intrusion and reticle fade. In November 2015, the U.S. Department of Justice announced a civil settlement in which EOTech and its then-parent L-3 made admissions concerning thermal drift, cold-weather distortion, and moisture incursion in sights sold to federal agencies. Readers researching that episode should compare the documents below with the Department of Justice’s 2015 account and settlement summary.
Primary & Secondary received the material below when it was not generally available outside L3 Communications. The documents describe the company’s answers at that time concerning affected products, testing, performance limitations, and refunds.
Topics covered in the memo that is republished below include: thermal shift, reticle fade, parallax, cold weather distortion; and a FAQ covering many of the questions regarding performance of the sights, which are affected, and refund issues.
Of special note to our professional end-user readers, copies and results of all testing done to arrive at the technical data points published in the below memo can be made available to government agencies who request it from L3 Communications.
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