I've had 3 MROs with AD QD mounts and a Battle Steel mount for a few months. I've mounted all of them with the lever on the right side (above ejection port). For some reason, just today, I've noticed that the dot is quite off center of the optic. Seems like the base of the MRO isn't symmetric. Before I go remounting the bases and resighting the rifles, can someone confirm, if the MRO is reversible on the AD mount or the Battle Steel mount?