The difference between Critical DEFENSE® & Critical DUTY® Critical DUTY® ammo is packaged in 50-count boxes for Law Enforcement. Critical DUTY® ammo features an“H”on the tip. Critical DUTY® ammo features waterproof sealant around the primer. Critical DUTY® = On-Duty/ Patrol/Tactical Critical DUTY® handgun ammunition is built to meet the diverse on-duty requirements of law enforcement and tactical professionals. Critical DUTY® ammunition delivers superior barrier penetration and subsequent terminal performance, while still minimizing the liability of over-penetration. The FlexLock® bullets loaded in all Critical DUTY® offerings are rugged, heavy-jacketed bullets that deliver“barrier blind”performance when shot through common urban barriers* (bare gelatin, auto glass, sheet metal, plywood, drywall, and heavy clothing). In addition, Critical DUTY® loads are designed to work in ALL handguns. However, these loads deliver optimized performance through the FBI Protocol test when used in full-sized handguns. All Critical DUTY® ammunition is loaded in nickel plated cases for improved feeding and increased visibility in low-light situations and features waterproof sealant around the primer and the case mouth to provide superior performance no matter your environment. *As defined by the“FBI Protocol”handgun ammunition test. U.S. Patent Nos. 8,161,885 8,413,587 9,121,677 Critical DEFENSE® = Backup Weapons/Off-Duty Carry Critical DEFENSE® handgun ammunition is ideal for backup weapons, off-duty carry or for those serving in executive protection, undercover operations, or any dedicated close quarters situation. Critical DEFENSE® provides controlled expansion while reducing the potential of over penetration. The patented FTX® bullet and associated Flex Tip® technology used in Critical DEFENSE® ammunition eliminates the clogging and inconsistent expansion and penetration that often plagues hollow point bullets. All Critical DEFENSE® ammunition is loaded in nickel-plated cases for improved feeding and increased visibility in low-light situations. Critical DEFENSE® is unaffected by thick, heavy clothing (including denim and leather) and delivers superior controlled expansion with deep wound cavities over a wide range of velocities. Premium low- flash propellants have been specifically tailored for short-barreled handguns to deliver proven performance. U.S. Patent Nos. 8,161,885 8,413,587 14 HANDGUN h o r n a d y L E . c o m