The Helos BTR GEN2 is the exception. Advanced Fully Multi-Coated lenses and XPL coatings balance out this optic for a wide variety of conditions. Cross-over features such as Locking turrets are not just for hunting, they instill confidence in mid to long range shooters as well. FFP, Fully Multi-coated Lenses, Direct Dial and Locking Elevation & Windage Turrets, Illuminated Reticle, 34mm Tube, Zero Stop.