Eotech EXPS 3-2 with matching color Unity Tactical riser combo The EXPS3 Holographic Weapon Sight is a lightweight, non-magnifying, optical sight designed for close to mid-range engagements. It provides very fast target acquisition and engagement at short ranges while providing aiming capability out to 300 meters equal to or better than iron sights. The EXPS3 features easy-to-adjust side buttons, a quick-detach lever, and a transversely-mounted lithium CR123A battery. The increased height of the EXPS creates a lower 1/3 cowitness with iron sights. Features: Quick-detach lever compatible with 1" Weaver and MIL-SPEC Picatinny rails Powered by (1) CR123A lithium battery Runtime: 600 continuous hours at setting 12 at room temp 20 daylight settings with 10 night vision settings Submersible to 33 ft Length: 3.8" Width: 2.3" Height: 2.9" Weight: 11.2 oz This is the optic of choice for the technologically advanced modern rifle hunter. Its night vision-compatibility makes it a versatile choice for day or night hunting. The 68 MOA ring with 1 MOA dot is ideal for fast target acquisition. It provides three usable aiming points; 50 and 200 yards at the center dot and 7 yards at the bottom of the circle. FAST(TM) is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. A 2.26" optical centerline height provides faster/easier reticle acquisition while wearing electronic earpro/communications headsets, night vision goggles and gas masks and allows for more rapid visual processing of the battlefield by promoting a heads-up posture. A heads-up posture also helps users maintain a neutral spine position which is more comfortable while wearing helmets, plate carriers, and other heavy gear. FAST(TM) Riser securely elevates block-type red dot optics with a standard lower 1/3 cowitness picatinny mount to a 2.26 optical center line. FAST(TM) Riser provides an elevated M1913 Picatinny platform for direct attachment of optics such as EOTech EXPSA(R), Leupold LCOA(R), Vortex UH-1A(R), and other "lower 1/3" optics*.