American Defense Manufacturing Burris FastFire Red Dot Mount to the Picatinny Rail System Flat Dark Earth AD-22 STD FDE-TL. Also fits the Doctor mini red dot and Vortex Viper and Vortex Venom Red Dot sights. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the Patented QD Auto Lock Lever system to accommodate both in spec and out of spec rail systems. Specifications for American Defense Manufacturing Burris FastFire Red Dot Mount to the Picatinny Rail System: Manufacturer: American Defense Manufacturing Red Dot Sights-Footprint: Docter Optic Cut: Not Applicable Condition: New Additional Features: Titanium Lever Package Contents: American Defense Manufacturing Burris FastFire Red Dot Mount to the Picatinny Rail System American Defense Manufacturing AD-22 STD FDE-TL: Burris FastFire Red Dot Mount to the Picatinny Rail System Flat Dark Earth