This Nightforce ATACR F1 4-16x42mm riflescope with a Tremor3 reticle and .1 Mil-Radian is compact yet powerful. Features include ZeroHold, power throw lever, fully multi-coated ED glass lenses, capped windage adjustment, parallax adjustment, XtremeSpeed thread for a fast diopter adjustment, and first focal plane reticles for fast hold-off adjustments and precise ranging calculations.