The Hornady Critical Defense 5.7x28mm 40 Grains FTX Centerfire Ammunition - 25 Rounds are recommended for personal defense and concealed carry. These hollow-point bullets have nickel-plated cases for increased visibility and corrosion-resistance. Flex Tip technology eliminates clogging for reliable performance, and low flash propellants reduce recoil and limit muzzle flash. Hornady Critical Defense 5.7x28mm 40 Grains FTX Centerfire Ammunition - 25 Rounds - Pistol Shells at Academy Sports