Quick access - EOTech Model 558 Holographic Weapon Sight

I've used earlier models of EOTech's with the NV/On/Off button on the rear of the unit throughout my military career.. I like the new placement on the support hand side making it quick and easy to lighten/brighten while still in a good shooting position. If you have flip up sights tight against it too this will make it that much easier to adjust brightness and or turn on/off.