Tac-Hammer Barrels are a performance focused product line that strives to provide accuracy, quality and reliability right out of the box. As with any barrel or firearm, ammunition quality plays a vital role to maximizing performance. We always recommend utilizing high quality SAAMI spec ammo. CCI makes quality ammo that performs well in the Tac-Hammer Barrels, but the Stinger casing is slightly longer than a standard casing. Our barrel design incorporates a Bentz Chamber that should not be used with the Stinger or Quickshok ammo manufactured by CCI. At this time we do not have plans of modifying the barrel chamber to accommodate the Stinger ammo. The barrel is compatible with a whole host of high quality ammo, but unfortunately not the Stinger ammo.