The lets you have high quality optics without the high cost of most name brands. This is a First Focal Plane scope with an illuminated MOA reticle, fully coated optics to deliver crisp clear images at long distances. The ED Glass with an Etched Glass Reticle is for a brighter sharper image and better shock resistance. This scope features an Argon purge for fog prevention on those cold days and a 1 piece tube for added strength. This ARES Scopes has a Precision Zero Stop that lets you return to zero in the dark or even blind folded.