FAST Riser securely elevates block-type red dot optics with a standard lower 1/3 cowitness picatinny mount to a 2.26a ^2 optical center line. FAST Riser provides an elevated M1913 Picatinny platform for direct attachment of optics such as EOTech EXPS, Leupold LCO, Vortex UH-1, and other "lower 1/3" optics*. *Technically, the FAST Riser will support "absolute cowitness" optics such as EOTech XPS, Sig Sauer Romeo8H, etc. But, compatibility with the FAST FTC Magnifier Mount will be limited. The FAST Riser comes standard with a rail-grabber clamp. A Flip-Up Offset Backup Rear Iron Sight Mfg: Unity Tactical
