EOTech EXPS2-0GRN Green Reticle Holographic SightThe EOTech EXPS2 offers both eyes open shooting for an unparalleled targeting experience. It features a quick-detach lever and easy-to-adjust side buttons. The increased height of the EXPS provides iron sight co-witness access in the lower third of the viewing window. Whether you're using the sight for law enforcement or hunting, the EXPS sight are the premier one in its class. EOTech EXPS2 Features: Submersible up to 10 feetDetach-lever fits both 1" Weaver am MIL-STD-1913 railBattery Life: 600 hours of continuous use at setting 12 at room temp. EOTech EXPS2 Holographic Sight Green Reticle EXPS2-0GRN