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 30mm Tube Zero Stop.