Red or green sights are optional, detachable, and can be used as a standalone. A quick detach lens allows the user to change from long range to short in a blink of an eye. Includes yellow lens cap and lens cover to prevent interference from sunlight. Accurate and fast adjustment with windage and elevation turrets Highest quality multi-coated lenses provide maximum light transmission.Specifications: Reticle Type Mil-DotMagnification 3x-9xObjective Lens 42mmLength 205mmWeight 540gNitrogen Filled YesWater proof YesFog proof YesShockproof Yes 1X RIfle Scope