Fully adjustable to fit both in and out of spec rail systems.Hard coat Type 3 Mil-Spec anodized for a lifetime of performance.Precision machined from 6061 T6 aluminum.Superior clamping surface ensures maximum rail engagement. The lower 1/3rd cowitness set-up allows a less obstructed view of the entire scope tube when using the red dot instead of the iron sights. As the name implies, 1/3 co-witness sights are only visible in about 30 of your optic.Compatibility: Holosun Optics with Compatible Shoe. Lever can be configured to lock to the front or the rear. Co-witnessing means you can align your dot with your iron sights.Can be adjusted with your finger or a flat blade screwdriver.Does not require proprietary tools for adjustment.Provides absolute co-witness with the SPARC red dot. Will work with most 30 mm red dot sights. Provides lower 1/3 co-witness mounting height of 40 mm. The cantilever ring will move the StrikeFire forward about one inch. Provides lower 1/3 co-witness with the Razor red dot. Provides extra rail room for rear Back Up Iron Sights (BUIS) when using the StrikeFire red dot along with the VMX-3T magnifier. This riser mount can also be used with Vortex SPARC red dots. 6 inches (15.3mm) above the base surface, and weighs 3 ounces. When used in conjunction with the Picatinny clamp included with the Razor, this mount positions the red dot of the Razor in the lower third of the field of view when co-witnessed with the iron sights. This riser mount is precision Computer Numeric Controlled (CNC) machined from a solid block of 6061 T6 aluminum, finished in a black hard coat anodize and features the Auto Lock Lever System. A lower 1/3rd co-witness places the red dot in the bottom part of the scope tube when aiming down the iron sights. The AR15 Riser Mount with a quick release lever is designed for mounting the Razor red dot sight onto a flattop style AR-15 rifle as the primary optic. This solid precision machined 7075-T6 aluminum mount will give you the rock solid platform to get your MRO installed correctly. Description: Vortex Razor Red Dot QR Riser Mount, Lower 1/3 Co-Witness. Get your MRO mounted right with the 1/3 Co-Witness Quick Release Mount from Trijicon.

Lower 1 3 co witness