Vortex Optics Viper XBR 2.5-10x44 Crossbow Scope with XBR-1 Illuminated Reticle (MOA) - VXBR-1 Illum. XBR-1 Reticle Hard Anodized Finish Vortex proprietary XR fully multi-coated lens coatings increase light transmission Construction from a solid block of aircraft-grade aluminum delivers increased strength Fast focus eyepiece allows quick and easy reticle focusing