Get rid of them if you can get them off without harming the rifle or scope! There's a couple of serious drawbacks to MOST see-under mounts. One is that the stock comb can be of a correct height for only one sighting plane, either iron sights or a scope. Generally, a see-under mount makes you have to crane your neck and get your cheek up off the stock too high to see through the scope. If it turns out that your stock comb is the correct height for the scope so mounted, you'll have a devil of a time forcing your face down onto the stock hard/far enough to use the irons!! The other problem is that most such mounts are pretty flimsy, and are much more subject to being knocked out of zero than lower, solid-ring mounts like the Leupopld double-dovetail mentioned above!!!