Product Description: Visionking Fast Focusing 3.5-25x56 Riflescope FMC 34mm Tube Mil-dot Illuminated Hunting Tactical Nitrogen Optical Sight Description: The Visionking 3.5-25x56 riflescope is one piece main tube with black matte finished. And it features mil dot reticle, multi-coated optics. With full filled Nitrogen, this riflescope is totally waterproof, frogproof and shockproof. It is ideal for faster target acquisition in low light conditions and all kinds of weather.So it is the best choice for target hunting usage,very recommend for from .22 to .338 cal; Specification: