I'm in the process of overhauling and reconstructing FM 23-16, "Automatic Rifle Marksmanship", dated June 1965. The manual basically covers marksmanship utilizing the M14E2 (M14A1) and M14 "Modified" (although it looks and acts like a standard M14 with selector switch). I should finish the manual in time for Christmas. I haven't really seen many of these manuals around. The pictures of the M14E2 are the best I've ever seen. Hopefully, a M14E2 / M14A1 poster can come out of the variant manual. More well after Thanksgiving.