Unique honeycombed design offers anti-glint and anti-glare that can be used to cut the glare that interferes with sighting and to aid in camouflaging your optics. Aimpoint's Lens Filter is designed to mount to your Red Dot by fitting inside an Aimpoint Flip-Up Lens Cover (sold separately).Notes: Used to prevent reflective flash from optical glass.Fits under lens cover.For Comp, PRO, ACO and 9000 model sights