Hornady Critical Defense .45 ACP ammunition is a dependable handgun self-defense round that includes the FTX bullet with hollow point polymer tip for maximal ballistic performance and controlled expansion. Additionally, this ammo's unique design allows it to feed reliably in pistols. Critical Defense brass cases are nickel plated to prevent corrosion and the low-flash propellants make it significantly easier to see in low light environments. Hornady offers Critical Defense ammunition with the Flex Tip expanding bullet in most pistol calibers, making it a great choice for virtually any concealed carry gun.