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EOTech 550 is a line of waterproof Red Dot Sights that are compatible with night vision devices. The EOTech 550 Holo Sights also have room to add your choice of magnifier. Red Dot Sights in the EOTech 550 series include a range of waterproof sights that are submersible to over 30 feet! Quick-release mounts make it easy to switch out your red dot sight when needed - and the EOTech 550 Holographic Weapon Sights can be remounted with instant accuracy, with repeatability within 1 MOA. EOTech 550 Holo Sights feature 65 MOA reticles, and can operate in a range of temperatures from -40 F to + 150 F. These holographic sights are available from EOTech in multiple options, with end- or side-mounted control buttons to control the reticle brightness of the holo scope, and a variety of power sources. The EOTech 550 Series of reflex sights is ideal for tactical operators in the military or law enforcement, as well as serious hunters.