With long eye relief, a fast-focus eyepiece, fully multi-coated lenses and resettable MOA turrets, there is no compromising with the Crossfire II. Built to withstand recoil and impact, this rifle scope is ruggedly constructed from a solid block of aircraft-grade aluminum and anodized with a durable black finish. The scope contains O-ring seals preventing moisture, dust, and debris from penetrating while nitrogen gas purging prevents internal fogging over a wide range of temperatures. Features: 4-12x magnification with 44mm objective lens Fully multicoated lens 1 inch tube diameter Single piece aluminum body Nitrogen purged and O-ring sealed for water and fog proofing Black hardcoat anodized finish Fast focus eye piece Includes lens covers and lens cloth Inside this second focal plane offering, you'll find Vortex's Dead-hold BDC. It's customized hashmark design helps eliminate guesswork on holdover and windage corrections. Great for shooting at varying ranges where estimating holdover is of concern.