Ncstar 3-9x42 R one piece aluminum main tube with rubber outer coating, mulit coated lenses, recticle illuminate in red or green with muliiple brightness settings, Includes bulit in lens caps and either aluminum weaver style rings or AR15 carry handle mount. * eye relief 3. * Magnification 3x-9x * Tube Dia 30mm * Reticle P4 Sniper * Lenght 7.75 * Click Value 1/2 M.O.A. * Lens Coating Ruby