(Capt obvious here) Lapping isnt just ring related. It reflects the base tolerances, action holes, etc. And, yes, super glue. Try it.NOOOOOOOO! And buy quality rings that don't need to be lapped. Lapping allows for a loose tolerance if not done perfectly. A good set of rings such as Nightforce, Seekens, Spuhr, etc. are machined far more precisely than you can ever lap by hand.