Nikon 8412 2.5-10x44 Monarch X Riflescope (Mildot Reticle) (Black) Riflescope with 2.5x to 10x magnification range and 44mm objective lens Ultra ClearCoat optical system delivers bright, sharp, flat sight picture Rugged 1-piece, 30mm body tube; aircraft-grade aluminum construction Nitrogen-filled, O-ring-sealed housing is waterproof, fogproof, and shockproof Glass-etched mil-dot reticle; measures 13.9 inches long; weighs 23.5 ounces