Primary Arms GLx 1x MicroPrism Anti-Reflection Device Black. However these devices have many more practical advantages for the everyday user. Eliminating scope glint can also be helpful in hunting situations as bright reflections can possibly scare away deer. It also is extremely helpful in keeping your glass clean from dirt and debris that can possibly scratch the lens. This anti-reflection device is made from anodized aluminum and is easily installed by screwing it into the objective lens. This model only fits the Primary Arms GLx 1X micro prism scope. Specifications for Primary Arms GLx 1x MicroPrism Anti-Reflection Device: Manufacturer: Primary Arms Color: Black Package Contents: Primary Arms GLx 1x MicroPrism Anti-Reflection Device Primary Arms 210115: GLx 1x MicroPrism Anti-Reflection Device Black