The Trushot Scope Series is waterproof, fogproof, and nitrogen gas-filled. It also has a duplex reticle, generous eye relief, fully-coated lenses for maximum brightness, clarity and contrast. It also features rubber eye-guard removable lens caps, coin-style windage and elevation adjustment under screw down caps, durable leaf spring for windage and elevation adjustments, a one piece tube made of aircraft quality aluminum with a durable, scratch-resistant, non-reflective matte finish. This model includes rings for mounting. This model has a 3-9x magnification with a 40mm objective. Features: Generous eye relief Fully-coated lenses provide maximum brightness, clarity, and contrast Rubber-coated, speed-focus eye piece Durable, scratch-resistant, non-reflective matte finish Waterproof/fog-proof/nitrogen gas-filled