I had this probelm with my eotech, but I sent it in for repair and they fixed it in 1 day free of charge. If you have a similar problem, just email them and get it sorted out.
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my old 512 does it reaaaaaal bad. ill have to contact them
do you exposed it under the sun for long period of time?
did the eotech told you what might be the cause of the fading? i got a problem with my Eotech 557 ar 223. on the middle of my window, the reticla fade and i cant see the retical at day time. im from the philippines.