The Crossfire II scope includes long eye relief, a fast-focus eyepiece, fully multi-coated lenses and resettable MOA turrets, Dead-Hold BDC Reticle hashmark design helps eliminate guesswork on holdover and windage corrections. Good for hunting/shooting at varying ranges where estimating holdover is a concern. The hard-anodized single-piece aircraft-grade aluminum tube is nitrogen purged and O-ring sealed for waterproof/fog proof performance. Rugged construction withstands recoil and impact. Recommend mounting with Hunter 1" Riflescope Rings Medium Height (#18456). Made by Vortex®.