Great for close-quarter engagements, the EOTech Model EXPS3-0 Holographic Sight is a night-vision compatible device that offers 2-eyes-open shooting with a 7 mm raised base for iron sight access and a MIL-STD-1913, 1" weaver mount rail attachment. The easy-to-adjust side buttons and adjustable, locking, quick-detach lever make attaching and removing the sight a breeze. The sight is water-resistant up to 10 m so you can take it on land and sea. Includes a 123 lithium battery.