Line up your target with the Vortex Diamondback Tactical Riflescope, which can be mounted on your firearm. The riflescope is made with aircraft-grade aluminum tubing, and the waterproof and fog-proof construction helps prevent the elements from ruining your day in the field. The shockproof construction lessens impact and recoil to help prevent injury, and the EBR-2C reticle offers simple calculations to help you plan long-range shots before pulling the trigger. The Vortex Diamondback Tactical Riflescope is made of aluminum tubing and features waterproof construction.Specifications and Features: Eye relief (in.): 3.8 (10027); 3.9 (10029) Field of view (ft.): 26.9 - 6.7 at 100 yards (10027); 18 - 4.5 at 100 yards (10029) Finish: Matte Fog proof: Yes Magnification: 4x - 16x (10027); 6x - 24x (10029) Objective lens diameter (mm): 44 (10027); 50 (10029) Reticle: EBR-C2 (MRAD) Tube diameter (in.): 1.18 Water resistance: Waterproof