This is the Bushnell 1 x 4 x 24mm Throwdown PCL AR optic with illuminated reticle and integrated throw lever for quick magnification changes during those complex 3 Gun stages. BDC reticle is calibrated for 55 to 62 grain .223/5.56mm loads with aiming points out to 500 yards. 0.1 mil per click target turrets for quick and precise elevation and windage adjustments. Illuminated BTR reticle with 11 illumination settings. This is a first focal plane scope. Fully multi-coated optics for incredible brightness. Fast focus eyepiece. A great scope for the price of $274.99.