Elcan 1.5/6 All Models Backup Iron Sight Kit Black. 5-6x Iron Sight Kit is designed as a back-up sight for the SpecterDR 1.5-6x Optic Sight. When running the SpecterDR on a night-time mission or in any difficult-to-reach area it is critical that the operator has a clear view of the target and has supplemental aiming points. The primary aiming point can be considered the front sight post but the backup sight can be considered anywhere on the sight line on the vertical left or right side of the sight. Most operators are accustomed to a B.O.D. or MOE sight having both a front and a back sight. Therefore a BOB sight has a fixed location on the vertical and a variable offset distance from the front sight. This dual-sight configuration will work on all SpecterDR 1.5-6x optical sights. Specifications for Elcan 1.5/6 All Models Backup Iron Sight Kit: Manufacturer: Elcan Color: Black Fit: SpecterDR 1.5-6x Optic Sight Package Contents: Elcan 1.5/6 All Models Backup Iron Sight Kit Elcan PSK-SDR6-B: 1.5/6 All Models Backup Iron Sight Kit Black