Geissele Automatics Super Precision MRO Series Optic Mount Absolute Co-Witness, Black The Super precision mro series was developed specifically to work with the Trijicon mro and like mounted Red dot optics These mounts are precision Machined from a single piece of 7075-T6 high strength aluminum and will be available in both co-witness and lower third co-witness options This mount will attach your Red dot to your weapon with 1,400 pounds of clamping force, and features 3 shear lugs for maximum rigidity and return to zero