Hawke Sport Optics Vantage 3-9X40AO Mil Dot IR Riflescope 11 layer fully multi-coated optics for excellent clarity / Adjustable objective for parallax correction 1 inch mono-tube chassis for superior strength Glass etched reticle with red and green illumination / Rheostat on saddle offers 5 levels of brightness 1/4 MOA low profile no-snag fingertip turrets Fast focus eyebell and high torque zoom ring