The .45 AZ is based on the .45 ACP cartridges, which is originally designed to chamber in most pistols and submachine guns. This cartridge was made by special materials which can deal high damage to zombies. This cartridge costs $75 per 15 rounds while the maximum capacity for this cartridge is 200 in normal and zombie modes. In Zombie Scenario, 600 is the maximum.
- This cartridge is fictional.
- Like the SKULL weapons, .45 AZ and other AZ ammunition were created and developed by the Government.
- For a pistol/submachine gun, the ammunition is quite expensive.