Kahles Demo Products Kahles demo products have been slightly used for display or demonstrations by Kahles during outdoor industry events. They may exhibit minor cosmetic imperfections that will vary from demo product to product. Kahles demo products and their included accessories are guaranteed by Kahles to operate to the standards for a new product. In rare cases, one or more accessories may be missing. All Kahles demo products are covered by the Kahles Limited Lifetime Warranty (View Warranty). Kahles delivers maximum precision and repeatable accuracy with the K328i 3.5-28x50mm Riflescope. The elevation turret features a Zero Stop function for returning to the original zeroing, and a twist guard of the windage turret prevents unintentional adjustments. Both the windage and elevation turret feature clear and defined clicks. The K328i advanced optical design gives the optic a 40% larger field of view when compared to riflescopes of a similar class. This design also ensures perfect optical performance across the entire magnification range as well as a comfortable eye box. 40 % wider field of view compared to riflescopes of a similar class Comfortable eyebox 8x zoom with perfect optical performance across the entire adjustment range Windage adjustment on the left or right with TWIST GUARD rotation protection Patented parallax adjustment integrated in the elevation turret (20 m to infinity) Absolutely reliable repeat accuracy and clearly defined clicks Precise illuminated reticles in 1st focal plane