American Defense Manufacturing AD-Etech-R Mount for EXPS3 EOTECH .275in Flat Dark Earth AD-ETECH-R STD FDE-TL. It raises the height of the optic .250 placing the iron sights in the lower one third. Overall Length is 4.8". It also includes a built in small section of rail at the rear for NV or a magnifying optic. For use with Thumbscrew EoTech Sights Will not fit the EXPS EOTech Optics with the built in QD Lever on the optic itself or the Flip To side Magnifier Mount please see the AD-ETECH-R2. You will need a low Magnifier mount to line up with the sight. 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 AD-Etech-R Mount for EXPS3 EOTECH: Manufacturer: American Defense Manufacturing Color: Flat Dark Earth Condition: New Additional Features: Titanium Lever Package Contents: American Defense Manufacturing AD-Etech-R Mount for EXPS3 EOTECH American Defense Manufacturing AD-ETECH-R STD FDE-TL: AD-Etech-R Mount for EXPS3 EOTECH .275in Flat Dark Earth