Patented RFBC Turret System with HuntSmart Reticle; Glass etched second focal plane reticle protected between two layers of glass; Fast-focus eyepiece; Grooved and bedded lenses with proprietary adhesive for maximum recoil tolerance; TrueBC drop compensation; Heavy-duty one-piece aircraft aluminum body for ultimate durability; Fog-proof, shockproof and waterproof construction; High-density lens coatings; Titanium turret springs for unequalled tracking; Adjustable zero index ring