Vortex Crossfire red dot sight. Waterproof, featuring 2 MOA red dot with 1 MOA adjustments, fully coated lens, 11 brightness settings, including 2 NV compatible settings, hard anodized low glare matte finish, new long life battery up to 50,000 hours of use on one CR2032 battery, and unlimited eye relief. Includes skeletonized mount for two height options. New, Mfg # CF-RD2.