American Defense AD-22 Q.D. Mount For Burris Fastfire. Also fits the Doctor mini red dot and Vortex Viper and Vortex Venom Red Dot sights. Specifications for American Defense AD-22 Q.D. Mount For Burris Fastfire: Manufacturer: American Defense Manufacturing Finish: Hard Coat Type 3 Mil-Spec Anodize Fabric/Material: 6061-T6 Aluminum Red Dot Sights-Footprint: Docter Optic Cut: Burris Fastfire Weight: 2 oz Condition: New Mount Type: Picatinny Features of American Defense AD-22 Q.D. Mount For Burris Fastfire: The AD-22 Burris FastFire Mount features the Patented QD Auto Lock Lever system which has the following advantages: Does not require proprietary tools for adjustment. Can be adjusted with your finger or a flat blade screwdriver. Lever can be configured to lock to the front or the rear. Superior clamping surface to insure maximum rail engagement. Package Contents: American Defense AD-22 Q.D. Mount For Burris Fastfire American Defense Manufacturing AD-22 STD: Burris FastFire Mount Standard Lever Black