I have a 580 series Mini 14 with a UltiMAK rail and just purchased some Warne QD Medium 1RL rings. I was wondering what size of scope I could fit on the rifle? I know that medium rings are usually rated for up to 42mm objective and was actually looking at a scope that big (Redfield Battlezone 3-9x42mm). Would that fit or would I need a 40mm objective? If possible I would also like to have Butler Creek flip covers on the scope as well, if not then no big deal.