This is .45 ACP Hornady Critical Duty +P 220gr. FlexLock Hollow Point Ammo. Law enforcement and tactical professionals now have a truly advanced, 21st century handgun ammunition solution that delivers the most consistent and reliable urban barrier performance ever created! The proven Flex Tip design of the new FlexLock bullet eliminates clogging and aids bullet expansion. Its large mechanical jacket-to-core InterLock band works to keep the bullet and core from separating for maximum weight retention and proven terminal performance through all FBI test barriers. Nickel coated brass cased, boxer primed, non-magnetic and non-corrosive. This ammo comes packed in 20rd. boxes. Muzzle Velocity: 990 fps.