The see-through high mounts I have used (Air Force), are the worst of both worlds. The field of view is restricted to the point that they are not very useful, and to be able to see through to the fixed sights, you have to restrict the size of the scope's bell, as by putting a 32 mm scope on high mounts. So you compromise with a smaller (ie, less light gathering capacity) scope that must be mounted in an unnaturally high position for the ability to not see the fixed sights very well. I know that better see through sights are available in the world of firearms, like the Kwik-Site see through sights. I haven't seen any like these for air rifles. Mine are drilled mounts, not dovetails.