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If your EOTech 512 or 552 has been sitting in a case for a few years, chances are the old battery compartment took a beating from corrosion or a bad seal. This is the factory replacement made specifically for those pre-2009 sights, and it's the exact part EOTech uses to service worn or leaking housings. Swapping it out is about as simple as gun repairs get, and it can turn an optic you thought was done into one that fires right back up.
The big thing to know here is fitment. This 9-N1045 compartment is built for AA-powered 512 and 552 models manufactured before March 2009, and you can spot the pre-2009 version by the small "dog ears" on the bottom front of the cap rather than a flat bottom. The post-2009 sights use a different part, so matching your manufacture date is the whole ballgame. Get the right one and it's a true drop-in with no fitting or modification needed.
Most of these failures come down to one thing: batteries left in the sight too long. The AA cells slowly corrode, the internal contacts get gunky or start falling out, and suddenly the sight won't hold power. This replacement brings fresh contacts and a solid housing that seats the batteries properly and keeps a clean electrical connection, which is what actually gets your reticle glowing again.
Molded from tough polymer, the housing is made to shrug off the knocks and weather that come with real range time and field use. Folks who've made the swap report their older sights running like new afterward, holding zero and powering up without a hiccup. One thing worth noting: this OEM part doesn't carry the EOTech logo stamp on the side like some original housings did, but the fit and function are the genuine article.
Check your sight's manufacture date. This 9-N1045 compartment fits AA-powered 512 and 552 models made before March 2009. You can also tell the pre-2009 version apart by the small dog ears on the bottom front of the cap, while the newer housing has a flat bottom.
No, this one is built specifically for pre-2009 sights. EOTech makes a separate compartment (part 9-N1063) for 512 and 552 models manufactured 2009 and later. Matching the correct part to your manufacture date is the key to a proper fit.
This is a genuine OEM EOTech component, the same part the company uses to service worn or damaged housings. It installs as a true drop-in replacement. The only difference some folks notice is that it doesn't carry the EOTech logo stamp on the side that certain original housings had.
The most common culprit is leaving batteries in the sight for long stretches, which leads to corrosion and internal contacts that get loose or fall out. Replacing the compartment restores clean, solid contact so the sight powers up reliably again. Pulling your batteries during long-term storage helps prevent it from happening down the road.
| UPC | 672294210450 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 9-N1045 |
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