GBRS Group Hydra V2 Red Dot Sight Mount Kit Trijicon MRO Flat Dark Earth. 91" Optic Centerline for faster target ID" regardless of gear/ equipment obstructions" i.e.. EarPro/Comms headsets" Gas masks/CBRN" and Night vision use. A higher Optic allows for a more athletic posture and Heads-up attitude that enables the end-users to maintain a vertical spine which translates to body armor or presenting plates to the threat. This Heads-up style allows for faster processing speed and increased situational awareness. The unique and patented design offers an elevated MIL-STD-1913" or Picatinny platform for directly attaching accessories such as lights" optics" thermals" and aiming devices. It's perfect for the super short PDW/SMG platforms where rail space is limited" but mounting a light and aiming device is still critical. The pass-through on the neck allows for cable management or iron sight passthrough on the AIMPOINT and Trijicon variants. Features of GBRS Group Hydra V2 Mount Kit Fits: Allen wrench pass through holes for easier optic mounting Package Contents: GBRS Group Hydra V2 Mount Kit Fits GBRS Group GEAR-HYDRA2-MRO-FDE: Hydra V2 Red Dot Sight Mount Kit Trijicon MRO Flat Dark Earth