-An OEM verison of the FAST Optic Riser with only one third of the original price -2.26”optical centerline height provides faster/easier reticle acquisition -Elevated M1913 Picatinny platform -Designe for EOTech EXPS, Vortex UH-1 and other lower 1/3 co-witness optics -Comes standard with a rail-grabber clamp -Built from 7075-T6 Aluminum and Type III Hardcoat Anodized Black or FDE Rather than color in Black, I also have another color in FDE at the 3rd picture