The Meprolight M21 Lens Polarizer & Flash Guard Set 5626090000 is designed to enhance the performance of your Meprolight M21 reflex sight. This set includes a lens polarizer that reduces glare and reflections, improving visibility and target acquisition in bright conditions. The flash guard protects the lens from scratches and impacts, ensuring the sight remains in optimal condition. Easy to install and remove, the polarizer and flash guard set offers added functionality and protection for your reflex sight. Ideal for tactical shooters and hunters, the Meprolight M21 Lens Polarizer & Flash Guard Set enhances your shooting experience by providing clearer and more accurate sighting. Meprolight USA Meprolight M21 Lens Polarizer & Flash Guard Set 5626090000