All they sent me for my RMA approval was the note below. No mention of needing the original packaging or receipt . . . although I mentioned in my RMA request that I can provide the receipt if needed. So I don't know if that was implicit. I have a feeling, though, that they are just sending out a boilerplate response. I did have my original packaging and shipped mine back in that and with the receipt.
I have only heard of a few rejections in reading a couple different forums. One or two were rejected because the serial # was missing from the sight. I thought I had seen a coupe that specially asked for a receipt . . . but have also heard some folks that weren't asked. Hard to say. I am not sure they have been very clear on what is required. I do know that there have been a lot of people getting approved for some really old units.
Your refund request has been received and approved. Please print and enclose this email with your optic and return it to: EOTech Refunds, 1201 E Ellsworth Rd, Ann Arbor, MI 48108. EOTech will refund the purchase price plus $15 shipping cost as soon as possible.
Thank You,
James Jenkins
Customer Service
EOTech, an L-3 Communications Company