The AD-AEMS mount is designed as a QD replacement mount for the Holosun AEMS Red Dot. Available in absolute co-witness, lower 1/3 co-witness, 1.93" and 2.33" NV heights. The Holosun AEMS Low Mount is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize and features the Patented QD Auto Lock(tm) Lever system to accommodate both in spec and out of spec rail systems Specifications for American Defense Manufacturing Holosun AEMS QD Red Dot Mount: Manufacturer: American Defense Manufacturing Color: Black Finish: Anodized Gun Type: Rifle Length: 2 in Attachment/Mount Type: Quick Detach Fabric/Material: 6061 T6 Aluminum Width: 1.4 in Optic Cut: Holosun Hand: Ambidextrous Features of American Defense Manufacturing Holosun AEMS QD Standart Lever Red Dot Mount 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 Manufacturing Holosun AEMS QD Standart Lever Red Dot Mount