Nikon 1-4x20 8485 Matte M223 Rifle scope offers the same high quality and Nikon piece of mind offered in all Nikon Rifle scopes. These Nikon M-223 Rifle scopes are all engineered for the 223 Rem./5.56mm NATO round with 55-grain polymer tip bullet. With Nikon 's latest reticle and adjustment technologies, the Nikon M-223 8485 Rifle scope integrates the same level of quality as their flagship Nikon Turkey Pro Rifle scopes. In addition, the Nikon 8485 Rifle scope from Nikon is waterproof, fog-proof as well as shockproof and this Nikon rifle scope is nitrogen filled and O-ring sealed it also available in Nikoplex Reticles and BDC 600 Reticles.