NIKON 8411 MONARCH 2.5-10 X 42MM BDC RIFLESCOPE 8411. MONARCH EYE BOX TECHNOLOGY WITH 4 CONSTANT EYE RELIEF ; WIDE- 4X ZOOM MAGNIFICATION RANGE ; BRIGHT- HIGH-RESOLUTION OPTICS ; 1/4-MOA HAND TURN RETICLE ADJUSTMENTS ; ENHANCED RING SPACING