Leupold VX-3i 3.5-10x50mm Duplex Reticle Matte Black Riflescope Crafted from 6061-T6 aircraft quality aluminum Twilight Max Light Management System A versatile 3:1 zoom ratio erector system that is ideal for virtually any situation Twin Bias Spring Erector System exerts up to 30 percent more holding force on the erector, virtually eliminating erector system backlash and stress on the vital internal workings of the scope for longer life 2nd Generation Argon/Krypton Waterproofing