Feyachi RS60 Red Dot Reflex Sight Nickel - Multiple Reticle Iron Sights Each group can last one

Each group can last one hour

By holding down the screw part

Low profile with ambidextrous on-off switch

Lower 1/3 co-witness /Absolute co-witness with iron sight when you install it on your red dot sight

Feyachi RS60 Red Dot Reflex Sight Nickel - Multiple Reticle Iron Sights Each group can last oneAbout this item Tubeless design with 40mm reflex lens aperture provides quick target acquisition, also a wider field of view to maintain situational awarenes. 4 Selectable reticles and 5 brightness settings. Low power consumption for long battery life. Integrated mount for standard 20mm Picatinny or Weaver rails which will not loose, made to last. Made of high grade aluminum alloy which makes the red dot sight durable and light weight.