Geissele Automatics 05-401B Super Precision T1 Series Optic Mount Absolute Co-Witness The Super precision T1 series was developed specifically to work with the aim point T1 and similarly 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