American Defense Manufacturing Trijicon RMR Mount w/ Offset Titanium Lever 45 Degree Offset Left Hand Black. Left Hand mount will place the optic on the Left Side of the rifle. Right Hand mount will place the optic on the Right Side of the rifle. The mount requires ? of clearance under the scope tube or eye piece to fit under the scope.The base is 1.35 long. The 33 degree model was designed specifically for use with the ACOG Optic. The 45 degree is for use with scopes with large adjustment caps. 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 RMR Mount w/ Offset: Manufacturer: American Defense Manufacturing Color: Black Finish: T3 Mil-Spec Anodize Gun Type: Rifle Fabric/Material: 6061-T6 Aluminum Fit: Trijicon RMR Red Dot Sights-Footprint: RMR Optic Cut: Trijicon RMR Length: 1.35 in Weight: 3.5 oz Condition: New Additional Features: 45 Degree Offset Features of American Defense Manufacturing Trijicon RMR Mount w/ Offset 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. The AD-RMR-OFFSET mini mount is precision CNC machined from a block of 6061 T6 aluminum. Finished in hard coat type 3 Mil-Spec anodize for a rock hard lasting finish. Hard coat anodized for a lifetime of performance. Fully adjustable to fit both in spec and out of spec rail systems. Features the Patented QD Auto Lock Lever system. Package Contents: American Defense Manufacturing Trijicon RMR Mount w/ Offset American Defense Manufacturing AD-RMR-OFFSET-LH-45-TL: Trijicon RMR Mount w/ Offset Titanium Lever 45 Degree Offset Left Hand Black