The EOTech XPS2 Holographic Weapon Sight is the shortest and lightest HWS sight yet. With a single 123 lithium battery configuration, the XPS provides additional rail space, leaving more room for rear iron sights, magnifiers or Night-Vision mount. Also offering waterproof capability up to 10ft, the XPS2 is a great compact option for your platform. Mounts to a Weaver or MIL-STD-1913 Rail and is repeatable to within 1 MOA after re-mounting. Utilizes a single 123 lithium battery with a continuous runtime of 600 hours on a brightness setting of 12.