Athlon Optics 15-60x56 Heras, BLR2 SPR SFP, 30mm Tube 15-60x magnification 56mm objective lens 30mm aircraft-grade aluminum tube Precision zero stop Exposed turrets Locking windage turret High-precision erector system 3.7" eye relief 10 yds to infinity side parallax adjustment 7.84-1.94 feet field of view at 100 yards 0.125 MOA Click Value 10 MOA adjustment per rotation 56 MOA total elevation adjustment 56 MOA total windage adjustment 15.9" long 35.3 oz BLR2 SFP (Second Focal Plane) MOA Etched Glass Reticle Advanced Fully-Multicoated lenses One piece tube Waterproof Fogproof Shockproof Argon purged Lifetime warranty