Vortex Optics Crossfire Riflescopes Shockproofing starts with solid, one-piece aluminum alloy construction and ends up with outstanding strength and ruggedness. Waterproofing and fog proofing features neutral-pressure nitrogen purging for optics that will withstand the elements at any elevation. Fully multi-coated optics deliver edge-to-edge clarity for the details you need when taking aim. 4 - 12 x 40 riflescope is ideal for Big Game, Long Range, Predator/Varmint, and Target. Fine Crosshair reticle uses fine wires for maximum precision in aiming. Good for the target and varmint hunter under daylight conditions.