Every component of your Leupold(R) Mark 4(R) LR/T(R) variable power riflescope is working together to help you make every shot count, whether you?re at the range, hunting, or in a tactical environment. 2nd Generation Argon/Krypton Waterproofing 30mm Maintube 3:1 Zoom Ratio 6061-T6 Aircraft Quality Aluminum Blackened Lens Edges DiamondCoat 2 Dual Use Flip Back Lens Covers (Mark 4) Generous Eyebox Lockable Fast-Focus Eyepiece M1 Adjustments Super Fast-Focus Eyepiece Side Focus Twin Bias Spring Erector System Waterproof/Fogproof Xtended Twilight Lens System ** BLEMISHED products may or may not include accessories. Image may not represent the exact product number.