Amazon just delivered my Fate and 150 AccuRival rounds. Immediately tested it with every type of Rival ammo in the house and ran the AccuRival rounds through my Knockout for good measure.
Nerf Rival Fate XXII-100 Blaster, Most Accurate Nerf Rival System, Adjustable Rear Sight, 3 Nerf Rival Accu-Rounds - Nerf