Weaver Grand Slam 6-20X40 W/AO Fc Riflescope (Dot Matte) Fully multi-coated lenses for optimum edge-to-edge clarity Nitrogen purged tubes to eliminate internal fogging One piece construction that is waterproof, fogproof, and shockproof Micro-trac adjustment system with 1/8" adjustments at 100 yards Measure 14.3 inches in length and weighs 17.8 ounces