Designed with longevity and repeatability in mind, Meprolight's 1x30 Mepro 21 Dual-Illumination Reflex Sight features battery-free dual reticle illumination that uses fiber optics to focus ambient light when it's available, and a radioactive tritium system that provides light for the reticle in extreme low or no light. This illumination system ensures that the reticle is always on and visible, no matter what the lighting conditions are, and eliminates the need to manually adjust the intensity level when changing from indoor to outdoor, or day to night.

This version of the Mepro 21 is offered with a triangle reticle, a 30mm objective, and is unmagnified for fast target acquisition and tracking, with maximum situational awareness. A 1.7 MOA per click impact point correction and wide windage/elevation adjustment ranges ensures operators can get on-target in all terrain and weather conditions. It ships with a Picatinny/Weaver dual-throw lever mount attached that allows the optic to be removed and re-installed without having to re-zero, and the mount's adjustable-tension springs ensures a solid fit even on rails that are out of spec.