Wheeler understands the need for precision in today’s world of advanced shooting systems. Calculating total optic height above a receiver rail is difficult due to varying specifications from a variety of ring manufacturers. These risers eliminates the guess work; assuring you will have an ideal fit for any set up. The necessity to mount optics and accessories at a precise height above a picatinny rail led Wheeler Engineering to the development of the new Multi-Height Pic Rail System. Being able to select a riser that fits the particular application allows for perfect alignment of a scope and forward mounted Night Vision Device (NVD). Proper alignment of the scope with the NVD is critical in maintaining the same zero point with a day/night system. Configuring a custom riser height can enhance the performance of many fixed mount (no ring) optics as well. Proper height positioning of optics and other rail mounted accessories not only enhances usability but can also be critical to obtaining maximum accuracy. Durable CNC machined aluminum construction with anodized finish ensures precision fit and function. Each riser is 5.75? in length and incorporates three T15 fasteners for absolute maximum mounting strength.