Weaver Grand Slam 3-10X40 Riflescope (Black 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 1/4" adjustments at 100 yards Measures 11.9 inches in length and weighs 13 ounces