Accelerated accuracy that takes up just 2.75” of rail space. The EOTech Green HWS EXPS2 Holographic Weapon Sight (model # EXPS2-GRN) features green-reticle technology—approximately 5X easier to see than red in daylight—and leaves plenty of rail space for adding a magnifier and other attachments. Durable, lower third iron sight co-witness, and ergonomic, side-button adjustment all in a rock-solid unit with an adjustable, quick-detach locking lever. Mounts to 1" Weaver or MIL-STD-1913 rail. 20 daylight brightness settings.