The B.E.A.S.T. includes Nightforce DigIllum digital illuminated reticle technology, which has established new standards of convenience and repeatability. The shooter chooses the appropriate illumination setting for lighting conditions, from very dim to extremely bright, and can then turn off illumination to preserve battery power. When illumination is turned back on, it defaults to the shooter's chosen setting. This ensures that the user's night vision is not affected and that an instant shot is possible. DigIllum also includes a low-battery indicator and auto-off feature.

The Mil-R reticle allows precise ranging and accurate hold offs for effective first-shot placement and quick follow-up shots. This reticle features a floating center crosshair which is 1.0 Mil across, whole, half, .2 and .1 Mil-Radian graduations across the reticle, and a total of 15 Mil-Radian below center.