DESC: Are you tired of having to swap out your scope when maneuvering in and out of daylight and no-light scenarios? Well here's the solution, the Night Optics USA D-830-3A. This day and night vision scope eliminates the need to purchase and maintain separate daytime and night vision weapon sights, spend zeroing time and ammunition costs, or carry separate weapons because of the inherent loss of a scope's zero setting when changing from day to night optics.