Leupold Mark 4 Long Range/Tactical riflescopes are arguably some of the most dependable, highest performing riflescopes you?ll find anywhere. Their accuracy is proven in the field. Their rugged and absolute waterproof integrity is unquestionable. They are everything a long-range competitive shooter, target shooter, or hunter could ask for. Like all Leupold Mark 4 Optics, the ER/Ts deliver superior clarity and a generous range of windage and elevation adjustment for the accuracy and precision you demand at extreme distances. Xtended Twilight Lens System DiamondCoat 2 Lens Treatment 2nd Generation Argon/Krypton Waterproofing Generous Eyebox Blackened Lens Edges Twin Bias Spring Erector System Super Fast-Focus Eyepiece Lockable Fast-Focus Eyepiece 3:1 Zoom Ratio Side Focus Flip Back Lens Covers ** BLEMISHED products may or may not include accessories. Image may not represent the exact product number.