Truglo's Buckline Hunting Scope is designed for hunters in pursuit of whitetail, hogs, and other medium to large game. It features a water-resistant/fog-proof, nitrogen gas-filled one-piece aluminum tube with fully-coated lenses for maximum brightness, clarity and contrast. The tube also has a durable, scratch-resistant, non-reflective matte finish. Additional features of Buckline Hunting Scope included removable lens caps, generous eye relief, and a durable leaf-spring for windage and elevation adjustments.