No see thru's. See thru's raise the scope to high, they cause you to cant your head and result in poor anchor which leads to poor shots. They are also known to move, shift and loss of zero...don't believe me ask any gunsmith what he thinks of see thru's. Just not reliable. I would put QR mounts on your ML, I just switched to loopy QR's, from traditional fixed Burris mounts this year and well I love them. I can't honestly see why anybody would not prefer this system on ML for cleaning alone. And yes they return to zero everytime. My 2 cents Leupold Quick Release mounts and forget the rest.