Quality optics with stunning HD clarity 100% quality materials used and tested extensively Beautiful design and durability built to last Drop Zone-223 BDC Ballistic Reticle is calibrated for 55-62 grain, 223 REM/5.556 loads with aiming points out to 500 yards Side focus parallax adjustment for adjustable long-range accuracy and a fast-focus eyepiece Target turrets (1/4 MOA click value) for pinpoint precise adjustments Fully multi-coated optics for incredible brightness Made of high-durability aluminum alloy, anodize-finished and sealed to protect the inside from elements