American Defense Manufacturing Trijicon MRO Mount Low Standard Lever Black AD-MRO-L STD. It places the optic at a .99" centerline height. 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 Trijicon MRO Mount Low: Manufacturer: American Defense Manufacturing Finish: T3 Mil-Spec Anodize Fabric/Material: 6061-T6 Aluminum Red Dot Sights-Footprint: MRO Optic Cut: Not Applicable Weight: 1.8 oz Condition: New Features: 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 Trijicon MRO Mount Low American Defense Manufacturing AD-MRO-L STD: Trijicon MRO Mount Low Standard Lever Black