Who has had an EOTech problem?

[sinlessorrow]

Mine was a 511 with the 'N' sized batteries. It was dead within two weeks whether I turned it on or not. Should have contacted Eotech to fix it, but never did. It sat on a shelf for 3-4 years and I finally sold it cheap to someone to use on a dedicated range gun and could store it without batteries in it.

The 511 and 551 both had warnings in the instruction manual that it drained batteries and it was recomended to remove them when not in use

[observer]

I have used several 552 A65 Rev. F EoTech optics. I like the system, I do not own any currently. All weapons were hard use, banged on vehicles, rolled on and slammed into structural elements.

The Factory replaced or repaired all optics in very short order. The service was fantastic.

Problems:
1: Switch on unit failed, would turn on and function. The system would only shut down after 200 hours, when the battery failed. 10.5in. rifle

2: Power source failure, no function at all. 10.5in. rifle

There were other issues in the group, but those were mine.

[CLJ94104]

My brother has used an eotech in both of his deployments. I think maybe even the same one. No issues. I have had 2, a 512 and an EXPS3. Obviously since im not deployed they don't get the same rigorous use, but either way no issues here. I think eotech is a reputable sight and that everybody has their Kool Aid, Aimpoint or EOTech.

[Ming_the_Merciless]

Ran into my first problem, with an 2007, EOTech 512 A65 Rev F. I just recently had to replace the rubber gasket that surrounds the electrical spring contacts at the muzzle end of the battery compartment. Discovered it when I was swapping out for a fresh pair of batteries last week. Upon pulling out the spent batteries I found a round rubber bumper attached to one end of the AA batteries. To see if the EOTech would still function, I placed the loose rubber bumper back in with the battery, pressed up/down for on, and the connection was intermittment, causing the EOTech to shut on and off. I looked up the L3 customer service number for EOTech, and was surprised I was directly connected to someone on the other line opposed to navigating through some automated system. The representative quickly sent out the replacement rubber grommets. In retrospect, I was surprised at the altitude of the CS rep, treated it as if this occurred all the time. Guess it's a well established or known problem that they have a retrofit kit with instructions. Few days later the replacement part arrived and was self-explanatory as to how to complete the retrofit. Instead of two separate rubber grommets, the rubber material looks to be neoprene shaped to fit the cross sectional area of the end of the battery compartment, and does not rely on an adhesive to hold the rubber grommet in place. This should be a permanent fix, but we'll have to see.








I've been using the EOTech 512 for 5 years, sitting on top of an LaRue riser, on one rifle which has seen approximately over 16k rounds and counting, albeit most of that was with 22 LRs (~10,000 rds), remaining were with .223/5.56. To date this was the only significant failure I have experienced. Though it's never failed me before when I needed it, having been to a few carbine courses, seen plenty of range time, and some competition usage, I've lost confidence with the optic, considering I've never abused it beyond the normal operating regime from the standard inertia load from recoil, to find it inoperable from the failure of the rubber gasket adhesive is especially troubling. I suppose nothing last forever, with the mass of the AA battery in line with the bore axis, the recoil inertia - however small, would eventually fatigue the spring, rubber gasket, that or the combination of temperature extremes over the past 5 years, causing the adhesive that holds the rubber grommet to the back of the battery compartment to work loose over time. Luckily I am not a door kicker, and this problem was identified before I was in any time is life situation. But I suppose that's what BUIS are for, or using the technique of the EOTech square FOV as a poor man's ghost ring, Aimpoints are definitely easier with that in mind.

Because of this, and for my next build, I'll definitely side between an T1 or CompM4s, though I am eager to see and hear more about the new Trijicon SRS (Sealed Reflex Sight).

On the upside though, EOTech customer service was outstanding. Though I was surprised that I didn't know about this remedy earlier. So as a friendly PSA, if any one is using an older 512/552, EOTech with an older battery compartment, do yourself a favor and check what type of rubber grommet you have installed in your battery compartment. If it contains two round ones as shown in the picture above, call (734) 572-2176, and ask for a replacement.

[SMETNA]

Were you using alkalines, lithiums, or NiMh rechargeables?

[Bonez556]

I have had 2 different 512 models and never had any problem with them. I have a 553 coming tomorrow so we will see how this one does. My fingers are crossed that I dont have one that experiences problems. Ill post if I do.

[YammyMonkey]

I have a 2008 era Rev F 512 that lost the nitrogen charge in the sight & when it turned on, would not be bright enough for daylight use. The folks at EOTech were quick to respond to my email and quick to fix & return the sight at no charge.

I've also been running an XPS-2 for a little over a year with no issues so far. I have an Aimpoint Micro on one rifle and I think I'm going to end up going to the Micros on most of my future builds.

[M4Fundi]

I have a 2008 era Rev F 512 that lost the nitrogen charge in the sight & when it turned on, would not be bright enough for daylight use. The folks at EOTech were quick to respond to my email and quick to fix & return the sight at no charge.

I've also been running an XPS-2 for a little over a year with no issues so far. I have an Aimpoint Micro on one rifle and I think I'm going to end up going to the Micros on most of my future builds.

I have same problem and it took them a month to return my calls and emails and they want $80 to fix.

Is the nitrogen leak common?

[YammyMonkey]

I went to the EOTech site, under contacts, then warranty & emailed Michael Kroll. He sent me an RMA form & in the amount due area I filled in N/A. the confirmation email I received from them said it would be a no-cost repair, but I was prepared to pay for it, considering the age of the sight.

I don't know if the nitrogen leak is common. It wouldn't surprise me either way.

[claybirdd]

I recently bought a model 517 (AA batteries.) Anytime I would do rapid fire, the latch for the battery case would come open and the unit would turn off. Called CS And they quickly sent me a new battery shim plate about five thousandths of an inch thicker, for free. This resolved the problem