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Eotech holographic sights sure are a good piece of US mil tech. But they have their shortcomings

> is it worth it?
Probably not for EU prices. The technology is outdated and economically speaking, Holosun would be a better deal if you don't mind chink stuff.

I don't have one for the above reasons, my main beef with Eotech, aside from the price, is the battery life. This is fine for Western Special Forces who venture out for a few hours freshly equipped and then return to base to be re-equipped, but in the field this is a problem. Dead battery = useless sight. And good luck acquiring a CR123 battery in a war zone. Well, there's the more bulky 5xx series that at least takes AA batteries.
It also doesn't turn on and off.

A Holosun HS510c costs half of an Eotech, the batter lasts literally forever, has a solar charger and shake awake. The only downside is that it's not an Eotech.

Also be sure to have good eyes. Have you ever seen a holographic reticle? It's fuzzy and weird and with astigmtism it's unusable. Way more annoying than a red dot.

TL;DR
Be sure to try out an Eotech and a Holosun before you buy one.