The lighted ACU-X RD is a 20-inch, 440-grain crossbow arrow built for high visibility and consistent long-range performance in rail-less reverse-draw crossbows. It features an ACU-X Snap-On lighted nock that activates on the shot and can be deactivated by pulling the nock straight out, with an approximate 24-hour run time when activated. The high-performance carbon shaft uses a precision spine-indexing process, and the Snap-On design provides an audible click when properly engaged to help reduce lateral nock travel. Each arrow includes 2-inch Blazer vanes, a 92-grain insert, 16.5 percent FOC, 0.001-inch straightness inspection, and 1-grain weight matching per arrow.