It is not new that I don’t like the Eotech.
The problems I have had with the three Eotechs I have owned were:
512 Rev F. Batteries draining in under a month with the unit turned off. Broken battery compartment contacts.
552 Rev F. Extremely dim, possibly due to losing its nitrogen purge.
553 Battery contacts broken. Reticle hard to see in portions of the window, most likely due to lens de-laminating. One of the screws that held the hood on fell out and was lost, turns out the threading in the body had stripped out.
When I worked at a Shooting Range, It was common to see Eotechs break. An Example Broken Eotech
While this is more then enough reason to not recommend Eotech Optics, turns out this isn’t the whole story.
You can learn more about OTHER issues with Eotechs over at Soldier Systems.
Now the issues being discussed include but are not limited to:
Loss of zero in temperature shifts.
That Eotechs are not parallax free.
Adjustment are not actually half MOA but “Approx. 0.5 MOA”.
L3 knows about issues with the Eotechs.
Some of the Eotech fans are already trying to use the argument that if Eotechs had a problem, SEALs, Devgru, etc wouldn’t be using them. Most of us that have served can easily say that the military often issues absolute junk(for example the ILBE pack).
Whether you like Eotechs or not this will be something worth keeping an eye on.