The ACSS Aurora reticle is Primary Arms' very first foray into meter-based ranging and fire solutions. The company says the feature-rich and intuitive reticle design is uncluttered, designed to communicate vital information in an efficient manner to not only increase first-hit probability but drastically reduce the time necessary to reach a firing solution to get that hit. From 300m and in, the illuminated chevron aiming point is made to provide wicked-quick snap shooting capability and both-eyes-open engagement, so you never lose peripheral vision. The outer tips of the chevron pull double duty as leads for targets moving 3.1mph perpendicular to the shooter. For targets moving a bit faster, the two lead dots on either side of the chevron are leads for a target hustling along at 8.6mph. Primary Arms says Aurora even compensates for mounted targets up to 40mph.