Leupold Mark 4 Extended Range/Tactical Riflescope 4.5-

Xtended Twilight Lens System using Leupold’s index matched glass with wavelength specific lens coatings designed to optimize the transmission of low-light wavelengths. DiamondCoat 2 exterior lens coating. 2nd Generation Argon/Krypton Waterproofing. Generous eysbox. Blackened lens edges to reduce unwanted glare and diffusion through the lens edges. Twin Bias Spring Erector System. Super Fast-Focus Eyepiece. Waterproof and fogproof.