This state-of-the-art reticle has cascading windage and elevation dots so you can execute long-range shots out to 500 yards in still or windy conditions. Superb optical glass is precision ground. The lenses are multi-coated for glare resistance and maximum efficiency in low-light hunting conditions. The Fullfield E1 3-9x40mm riflescope has a sleek profile. It features upgraded windage and elevation knobs. And the separated power ring and eyepiece accepts flip-up lens caps. The scope is housed in a 1-piece stress-free tube. Its internal assembly is double spring-tensioned for shockproofing. The riflescope is resistant to a lifetime of field use heavy recoil and harsh vibration. It is protected by the Burris Forever Warranty. - Magnification: 3x-9x - Reticles: Ballistic Plex E1 - Objective Lens Diameter: 48 mm - Clear Objective Lens Diameter: 40 mm - Ocular Lens Diameter: 39 mm - Finish: Matte - Focal Plane: RFP - Main Tube Size: 1 in. - Field of View: 33 low-13 high (ft. @ 100 yds.) - Eye Relief: 3.1-3.4 in. - Exit Pupil: 13 low-5 high (mm) - Click Value: 1/4 MOA - Elevation Adjustment Total Capability: 50 MOA - Windage Adjustment: 50 MOA - Length: 12.2 in. - Weight: 13.0 oz.