The EOTech EXPS2 Transverse Law Enforcement and Military Holographic Red Dot Sight is the shortest model available from EOTech. It runs on a single CR123A battery which provides up to 600 hours of continuous runtime at setting 12. The EXPS leaves tons of rail space available for mounting flip-up iron sights or a magnifier and the integral mount allows for use on either a Weaver or Picatinny-style rail. The EOTech EXPS2 is not compatible with night vision devices.
Optics: Transmission holography - parallax free
Eye Relief: Unlimited
Brightness Settings: 20
Length/Width/Height: 3.8" x 2.3"x 2.9"
Weight: 11.2 Oz.
Temperature: -40 to 150 F
Battery Type: CR123
Battery Life: 600 Hours
Waterproof: Submersible to 10 ft depth
Sealing: Fogproof internal optics
Color/Finish: Non reflective black with hard coat finish
Adjustment (per click): 1/2 MOA
Adjustment Range: +/- 40 MOA travel
Mount: 1" Weaver or Picatinny (MIL-STD-1913) rail
Return to Zero: Repeatable to 2 MOA after re-mounting
Night Vision Compatibility: None