ATHLON SCOPE NEOS 4-12X40 BDC 22 RIMFIRE 1" FEATURES: Magnification 4-12 Objective Lens Diameter 40 mm Reticle BDC 22 Surface Finish Matte Lens Coating Wide Band Fully Multicoated Tube Material Aircraft Grade Aluminum Tube Diameter 25.4 mm Exit Pupil 7.2-2.5 mm Eye Relief 3.39-3.19 inches Field of View @100 yards 27.3-8.9 feet Click Value 0.25MOA Adjustment range per rotation 15MOA Total Elevation Adjustment 50MOA Total Windage Adjustment 50MOA Turret Style Capped Parallax Adjustment Side Focus – 10 yards to infinity Purging Material Nitrogen Length 12.56 inches Weight 18.1 oz Reticle Subtension Validity 12x