I had an eotech with a reticle that started disappearing around the edges. It was way outside of warranty. I called L3 to ask a few questions about the issue and they asked me to send it in so they could take a look at it. I expected to have to pay for the repair but they fixed it free of charge and sent it right back to me. They replaced an optical part and refilled with nitrogen. Michael Kroll is who I dealt with michael.kroll@l-3com.com. Fantastic customer service.