The EOTech 518.A65 Holographic Weapon Sight arranged in a heads up design that allows both eyes to be open in order to maintain peripheral vision and depth perception while shooting. The 518 is compatible with the LBC (Laser Battery Cap) and features easy-adjust side buttons, and an adjustable, locking quick-detach lever that fits both 1" Weaver and MIL-STD-1913 rail. This Holographic sight model operates on two easy-to-find common Alkaline or Lithium batteries. Mates close with the magnifier to reduce rail space. Submersible to 10' of water.