We never had scope covers for the Unertls while I was carrying one from 95-01, I don't even think there was a scope cover NSN that was part of the SL3 at all, and being "SL3 Complete" was a big deal to pass inspection prior to deploying so if one existed, we would have had it at one point or another.
The #1 scope cover used by us was an old sock with a slit cut in it and a knot tied in the end, with its mate being filled with sand, beans or rice to be used as our rear elevation support. The second most popular cover was a cravat wrapped around and tucked in between the scope and the action. I fashioned up a sort of box made out of riggers tape, 550 cord and isomat for mine that I used for a while, it at least kept the water off it better and provided some minor padding. I never saw anyone use Butler Creek or similar covers on theirs, and any paint marks would more likely be from the tape used to protect the lenses during painting than from a scope cover. That of course doesn't mean some didn't use flip covers, we bought a ton of stuff for our kit that wasn't on the NSN list, just saying I never saw it in my time.
