The Nikko Stirling Mountmaster 1″ Riflescope uses precision Grade ‘A’ glass and Microlux ETE lens coatings on both internal and external surfaces to decrease reflection and improve light transmission. Waterproof, fogproof and shockproof, these 1″ nitrogen filled scopes feature a Mil Dot reticle, watertight covers over the windage and elevation adjustments and an adjustable objective lens for parallax correction and fine focus. This scope comes complete with rings to mount on a 3/8″ Dovetail type rail, standard on many smaller caliber rifles. Key Features: