Had a question for you guys. I was researching red dots and quickly got sold on the EOtech 512. Went to amazon and bought it when it went on sale. When I received it, I looked in the corner to see if it was Rev F, and to my surprise... No F stamp. I was under the impression that all new 512's came with the stamp. So I called EOtech and they told me they stopped stamping it on. Plus, my manufacture date was Jun 2011. I don't know why I am not trusting the EOtech rep, but has anyone recently purchased one that didn't have the stamp?