Kinetic Development Group has introduced an absolute co-witness version of their SIDELOK mount for Aimpoint Micros (and compatible optics). The mount retains all the features of other KDG SIDELOK mounts including their extremely simple rail mounting and push-of-a-button dismounting.
It’d be nice to see an absolute co-witness mount from them for the MRO, but dimensions of their locking mechanism might prevent that.