Product Description SPECIFICATIONS CONSTRUCTION: METAL MAGNIFICATION: 2X RAIL TYPE: 20MM OBJECTIVE LENS DIAMETER: 42MM ADJUST METHOD: COIN CLICK VALUE: 1/4" MOA RETICLE: RED/GREEN SHOCKPROOF: YES NITROGEN FILLED: YES OPTICAL COATING: BLUE COLOR: BLACK FEATURES INCREDIBLY TOUGH TEMPERED METAL ALLOY MANUFACTURING PROVES TO OUTLAST AND ENDURE IN THE FIELD AGAINST THE ELEMENTS AND DEBRIS. RUGGED NITROGEN FILLED AND SHOCK PROOF BODY ENHANCES SCOPE VITALITY. ADJUSTABLE PICATINNY RAIL ADAPTER SYSTEM EASILY FITS 20MM RAILS MAKING THIS ONE VERSATILE SCOPE. MULTI-OPTICAL COATING ADDS EASE IN VISUAL ALIGNMENT BETWEEN OPERATOR AND TARGET. DUAL RETICLE COLOR TYPE FEATURE ALLOWS A RED OR GREEN VISUAL HUE TO PROMOTE OPTICAL EASE DURING ANY SCENARIO. WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov/product Customer Reviews