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419 Posts
I believe you can also buy a spare battery compartment if ever needed.
EOtech running again
580
8
A family friend who served in the Marine Corps during the Iraq War gifted me this sight after his 8 year career with the Corp ended.
This one was mounted on his M4.
I ran it on an S/W MP .22 for several years, but the rifle then set in my gun cabinet, unused and unloved for several more.
When I pulled it out one day, the dot was gone. I figured the batteries needed replacement, and when I pulled the cover discovered they had corroded.
Popped in new batteries, but the sight did not light up.
Fast forward and I decided to give it another go. Watched a you tube video, and then cleaned the battery housing and contacts with alcohol. Popped new batteries in it and the red dot was back.
![Wood Glove Flooring Hardwood Wood stain]()
Tried to get a photo looking through the sight but the flash of the phone's camera blotted it out. Here it is sitting on my bench.
This one was mounted on his M4.
I ran it on an S/W MP .22 for several years, but the rifle then set in my gun cabinet, unused and unloved for several more.
When I pulled it out one day, the dot was gone. I figured the batteries needed replacement, and when I pulled the cover discovered they had corroded.
Popped in new batteries, but the sight did not light up.
Fast forward and I decided to give it another go. Watched a you tube video, and then cleaned the battery housing and contacts with alcohol. Popped new batteries in it and the red dot was back.
Tried to get a photo looking through the sight but the flash of the phone's camera blotted it out. Here it is sitting on my bench.
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You sure can... because the AA batteries slide back and forth under the recoil of every shot and eventually snap the battery compartment springs. Been there, done that.
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This is probably a good idea to replace: Battery Contact Replacement Kit for 511, 512, 551, 552
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127 Posts
No parts available for older versions.
Eotech said if I send the old one in they would send a new one for half price.
I keep it working by cleaning and adjusting the springs.
I it craters I may make the trade.
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Interesting. Brownells has factory replacement battery compartments for pre-2009 512s and 552s in stock (although I wonder what's different with the post-2009 models).
PRE-2009 512/552 BATTERY COMPARTMENT, AA-BATTERIES : EOTECH PRE-2009 512/552 BATTERY COMPARTMENT, AA BATTERIES | Brownells
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It's just refreshing the spacer foam to have positive contact with the springs, and minimize the movement under recoil. Not rocket science. That is a downside with the 512 - the orientation of the batteries causes them to move back and forth on the contacts. Poor older design.
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