GG&G Lens Covers for EOTech 512 and 552 SeriesZombie Killer. These GG&G Zombie Killer EOTech 512 and 552 Series Lens Covers feature the engraving "ZOMBIE KILLER" and is spring operated so that once pressure is applied to release it from the closed position it springs open. The rear cover lays across the top so as not to interfere with the field of view. The front cover opens and serves as a sun shield. GG&G Zombie Killer EOTech Holosight 512 & 552 Series Lens Covers are easy to install and to spring open. Specifications for GG&G Zombie Killer Lens Covers for EOTech 512 & 552 Series: Manufacturer: GG&G Country of Origin: USA Package Contents: GG&G Zombie Killer Lens Covers for EOTech 512 & 552 Series GG&G GGG-1275ZK: Lens Covers for EOTech 512 and 552 SeriesZombie Killer