I think your best bet is to mount on top of, or off at an angle from your rifle scope. I assume you will still have a rifle scope. This is often done with tactical scopes, and the Aimpoint is great with that setup. You either look for a tactical rail that mounts on the top scope ring, or you replace your top scope ring with one that has either another rail or an Aimpoint mount.
Here is a pic of one that we use from Wilcox, which replaces the top of a Nightforce ring: