SPECS: Rubber body, ABS plastic covers, neoprene pads, matte black. Noise-absorbing neoprene pads dampen the sound of the rear lens cove Mfg: Gg&G, Inc. Body section installs under the EOTech protective hood, so it's not even visible. Rear cover folds back on top of the EOTech's protective hood to ensure an unobstructed view through the sight. Front cover opens to near horizontal position to help block rain or sunlight. Tabs on the right and left sides of the covers allow a fast, ambidextrous flip-open action with thumb or finger pressure. Gg&G Eotech 511/512/551/552 Lens Cover Module - Gg&G 511, 512, 551, 552 Lens Coversįlexible rubber body with spring-loaded, ABS plastic covers help seal out dirt, dust and moisture to keep the lens surfaces of your EOTech holographic sight clean, scratch-free, and ready for use in all shooting conditions.