USED Primary Arms SLx Anti-Reflection Device 3X Prism Scope 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 black aluminum and is easily installed by screwing it into the objective lens. Specifications for Primary Arms SLx 3X Prism Scope Anti-Reflection Device: Manufacturer: Primary Arms Color: Black Fabric/Material: Aluminum Quantity: 1 Finish: Anodized Features of Primary Arms SLx 3X Prism Scope Anti-Reflection Device: Only fits Primary Arms 3X Prism scope models Eliminates scope glare and glint Protects scope lens from dirt and debris Package Contents: Primary Arms Anti-Reflection Device F/3x Compact Prism Scope USED Primary Arms SLx Anti-Reflection Device 3X Prism Scope Black 210008