The Unity Tactical FAST Riser was designed to bring red dot optics with built in lower 1/3 cowitness picatinny mounts in line with the heights of other Unity Tactical FAST products. This taller riser system enables picatinny compatible red dots to be mounted at a more comfortable height for users who need the ergonomics for use with equipment that makes traditional absolute and lower 1/3 cowitness height mounts inadequate for their needs. Compatible With:EOTech EXPSLeupold LCOVortex UH-1Other optics with same footprint Features:Made from 7075-T6 AluminumType III hardcoat anodizingRail grabber clamp mount2.8 ounces When using large earpro/communication devices or night vision equipment, the FAST Riser puts the optic at a more neutral heads-up posture to accommodate users shooting with full kit/gear. Raising the optic to a 2.26” optical center height, these are a great add-on for shooters who are utilizing magnifiers mounted on the Unity Tactical FAST FTC Magnifier Mount. SPECIFICATIONS Accessory Attachment M1913 Picatinny Brand Unity Tactical Color Black Finish Hard coat Anodized Mount Height 2.26 in. Quick Release Cross Bolt