Steiner's 56mm Anti-Reflection Device installs on the front of your 5-25x56 M5Xi riflescope and covers the objective lens with a tight honeycomb pattern that eliminates lens flare and reflections that can give away your position in a blind or hide. While the ARD blocks reflected light, it will not interfere with, or limit, your field of view, and it adds protection for your objective against scratches and abrasions. Made of a lightweight and durable aluminum alloy, it has a scratch- and corrosion-resistant matte-black anodized finish and machined threads that allow it to simply screw onto the riflescope for a secure installation.