The super precision mro Series was developed specifically to work with the Trijicon mrc 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. They will also be available in black type 3 hard coat anodize as well as our proprietary ddc (Desert dirt color) type 3 hard coat anodize. Utilizing geissele's update of the classic nut and bolt method, 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..