8.6 Blackout Ammo

4 8.6 Blackout ammunition listings from Maxim Defense, Underwood Ammo, and Pachmayr/Tacstar Division, sorted cheapest per round first so bulk cases and single boxes compare on the same footing. In-stock options run from $3.25 to $7.00 per round. Ammunition ships ground to your door in most states; where state law requires it, checkout routes it to a licensed dealer automatically.