Dry Ice Sub-Zero EOTech Torture Test: Does it Hold Zero? (EOTech Problems, Recall, and Lawsuit 2015)

Dumbass

This experiment is trash. 1) You took the optic off. 2) Did you do t to an Aimpoint.

It's electronics..it dissolves in extreme temperatures like any phone or computer.

takes optics off rail… obiously the zero will change after that.. fuk the cold temps..

Huh I zero my EoTech in Fairbanks Alaska in Winter. I rezero it in Nebraska in spring. I was shooting quite high.

Aimpoint

A shame. Due to my astigmatism, even after eyeglass correction, regular red dots looks like a cluster of fuzzy grapes which limits their utility for me, so I'm basically stuck with holographic sights or scopes.

Thanks for running this test with your equipment. Bummer about all the keyboard scientists. They don't have to watch it do they? They're not paying you. They could use a little more tact in their critiques.

-47* F when does anyone go out in Thats temps?

You let that thing warm up WAY too long. It was nowhere near negative temps by the time you fired.

Youre supposed to re zero when there’s s significant change in elevation or temperature. Hunting in Arizona vs Wyoming you’re gonna have totally different shot placement if you don’t re zero

You removed the optic so it will not be zero as when the first mounted test. Invalid!!

Every electronic optic has thermal drift. The Aimpoint T2 is probably the most resilient, but the new post-2016 Eotech isn't a slouch either. You also get far less parallax error in the EXPS3-0, a wider FOV and a better reticle all at a lower price than the T2. Support American businesses.

I would go for the Shield RMS

What about the fact that if your firearm barrel is at -40 the harmonics change and thus your point of impact will change. Anything made of metal with expand and contract with temperature changes. Don’t see the Issue with that, seems like common sense to me. And yes, I have 4 Eotech’s manufactured before 2015 and I love them!

We have now learned that all of these sights , dots are affected by cold weather conditions. That's why you have iron sights. Class over.

So is this a 16 inch barrel with the a frame at the normal carbine length? I love that rail

That metal on dry ice sound is how they make the lightsaber lock up sounds when they clash together.

And this is my monotone voice… hollllyyyy fuuuckkk guy. Have some enthusiasm.

Pro or con I think that eotech is pretty much finished. These are probably selling on ebay at bargain prices. I missed my chance to return mine which sucks. Having said that I'd buy one if it sold for $150.00 and under.

One contributing factor you overlooked is thermal expansion and contraction. When the Eotech was placed in the dry ice its metal mount point at the base shrinks/contracts in size relative to the rail on your rifle. But the rail on your rifle remained at the same size, so your point of aim will change. If you had placed the rifle and Eotech in dry ice, that would had been a better test.

except this problem is in evrlery optic. eotech just didn't acknowledge it to the public. that's what the lawsuit was about. I've heard of every optic failing. that's what you have backup sights

you are dumb I dont even like my eotechs I have a couple acogs a few aimpoints few eotechs not in use anymore didnt send back but your fuckn test you cant take a metal mount put it in dry ice put it onto metal rail that was not into dry ice as much as metal changes with temps even with a.r.m.s. mounts it doesnt matter your test is a fail untill you shoot, put whole rifle in take out and test even wait till glass normalizes if it shifts it will still be shifted for a few mins for glass to clear and then shoot. QUIT!!!

Just an observation: Your mount was also at the -30 temp you stated. Then it was placed on a rail that was at room temp. This alone will drastically change your zero and will cause (temporary) minor warpage and a change in zero. This will happen with any mount or optic and any and all materials have dimensional changes at temperature extremes.

Great experiment and thanks for taking the time to do this. But at the end of the day Eotech has been the most battle proven holo sight so I still believe they have some credibility.

its only extreme temperature shift. zero it in the temp you will be shooting and you are fine.

I see the Eotech recall like the VW recall, it doesn't turn me off from buying one. I honestly will never get my eotech to 120+ or -40 so to me its not much of an issue. I can understand the contract with SOCOM and the military and I will let them handle that. On the civilian side of things, I have never heard anyone complain about it. I just purchased my 2nd 553 for my new Block II build and have no regret buying them. But to each their own, I heard L3 is offering a $700 refund on the 553s so it seems no one is selling them on the used market and stores no longer carry them.

My little bro has a pretty new XPS 2 and just going from 80's to 60's throws it off really bad. garbage..

You have to do a t1 and an MRO yet

the extreme temperature change effects the rail, the handguard, the ammo and certainly the barrel. different materials expand and shrink at different rates.

What's the deal with the annoying robot voice?

group size wasn't consistent, lol wut? and to anyone thinking this is bad news just think, what red dot optic do you think could stand -40 with minimal thermal shift? probably none, Eotech has been (arguably) the best red dot for decades. You may call me a fanboy, which I'm not, but this is just ridicules.

the weather thats it. why the hell are cops in america cancelling. im in Canada during the winter and it works great and its -20 up here.

Would still take out enemy if aiming center mass.  Good to go!

The target retrieval system sucks. It looks like you have to press the button 100 times just to get it down range. My local range just has a toggle switch for forward and reverse. Granite it doesn't show yardage. Just my 2 cents

If I was going to war, lets say in a hot humid place, Id train and set my weapons to that habitat i.e. zeroing with similar conditions.

Most indoor ranges are only 70ft not yards. Are you sure you weren't shooting at 50ft? The deviation would be worse since 50ft is just over 16 yards

I"m aware of the issue with EOTechs. However, this is not a valid test. You can't expect return to zero with metal changing temperature that much.