Nikon Monarch 5.5-16.5x44 UCC Riflescope (AO Matte, BDC) High-quality riflescope with 5.5x to 16.5x magnification and 44mm objective diameter Fully multicoated, high-performance lenses deliver flare-free, high-contrast images Bullet drop compensating (BDC) reticle provides quick, simple aiming points for various distances Rugged 1-piece, 1-inch main body tube is 100 percent waterproof, shockproof, and fogproof Measures 13.5 inches long and weighs 18.7 ounces; Nikon lifetime warranty