The EOTech GG&G lens cover is easy to install. Simply remove the EOTech hood and install the new hood and lens cover. The GG&G hood is Type III anodized to spec, matte black, and matches the original EOTech finish. All windage and altitude calibration markings on the new hood are fully engraved and feature an off-white appearance for easy end-user visibility. The front lens cover is engraved with the GG&G logo or the words "Front Towards Enemy."