Meprolight Mepro M21 Day/Night Self-Illuminated Reflex Sight, Red Open X Reticle Viridian Two Aspherical plus one Extra-low

Two Aspherical plus one Extra-low Dispersion element and Ultra Multi-Coating are utilized to effectively control vignetting

1 to 4 18650 battery can be used

Self-defense Battery Type Rechargeable lithium Batt

The advanced Ultra Multi-Coated- 14 element-10 group design utilizes four highly specialized element types (High Refractive Index

Meprolight Mepro M21 Day/Night Self-Illuminated Reflex Sight, Red Open X Reticle Viridian Two Aspherical plus one Extra-lowThe MeproLight M21 Self Powered Day Night 1x30mm Illuminated Reflex Sight provides constant, all light aiming capability, without the need of a battery supply. Reticle illumination on these Red Dot Sights by Meprolight is achieved by a protected fiber optic light collector system during the day, and by a miniature self powered tritium light source at night. Night vision compatible, the Meprolight Self Powered Reflex M21 Tactical Sight features a large