American Defense Manufacturing AD-SF w/ SF Rail Mount for Small Red Dot Optics - Bushnell TRS- 25 Black AD-SF-R STD-TL. The mount is 1.35" long and sits .48" above the rail. This is a Low mount for these optics. It will not co-witness with AR-15 iron sights. 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-SF w/ SF Rail Mount for Small Red Dot Optics - Bushnell TRS- 25: Manufacturer: American Defense Manufacturing Color: Black Red Dot Sights-Footprint: Not Applicable Optic Cut: Not Applicable Condition: New Additional Features: Titanium Lever Package Contents: American Defense Manufacturing AD-SF w/ SF Rail Mount for Small Red Dot Optics - Bushnell TRS- 25 American Defense Manufacturing AD-SF-R STD-TL: AD-SF w/ SF Rail Mount for Small Red Dot Optics - Bushnell TRS- 25 Black