This US Optics MR-10 1.8-10x37 riflescope with GAP MIL reticle features a turret parallax left side focus, low profile rapid focus eyepiece, matte black type III hard anodizing, 12 position digital illumination, US#1 .1 mil windage knob, and EREK .1 mil elevation knob with 90 clicks per revolution.