NcStar 3-9X42E Red Illuminated Compact Scope/Ruby Lens (SEC3942R) Variable Power Scopes with superb zooming capabilities - Multi Coated Lenses - One piece anodized aluminum main tubes MAGNIFICATION: 3X-9X - TUBE DIA. 1in - OBJECTIVE DIA. (MM) 42.00 - FOV (FEET AT 100 YARDS) 37.7-12.5 EYE RELIEF (in) 3.00 - EXIT PUPIL(MM) 14-14.7 - RETICLE: P4 SNIPER CLICK VALUE : 1/2 M.O.A