Hawke Sport Optics Riflescope - Sidewinder 30 SF 8-32x56 1/2 Mil Dot IR High precision long range optical systems / 18 layer fully multi-coated optics for superior clarity Side focus control for parallax adjustment to infinity 30mm 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 exposed, locking and resettable turrets / Locking ocular and high torque zoom ring