The sleek profile of the Burris Fullfield E1™ 3 - 9 x 40 Riflescope features upgraded windage and elevation knobs and a separated power ring and eyepiece, which accept flip-up lens caps. The scope is housed in a 1-piece, stress-free tube, and its internal assembly is double-spring tensioned for shockproof protection. The reticle has cascading windage and elevation dots, so you can execute long-range shots out to 500 yards in most wind conditions. Optical glass is precision ground, while the lenses are multicoated for glare resistance and maximum efficiency in low-light hunting conditions.