Caliber Armor NIJ Certified* AR550 Package with Modular Overt Defense (M.O.D.) Body Armor Plate Carrier – NIJ Level III+Caliber Armor NIJ Certified* AR550 Package with Modular Overt Defense (M. O. D.) Body Armor Plate Carrier Stand ready with uncompromising protection and tactical versatility. The Caliber Armor AR550 + M. O. D. Body Armor Package delivers NIJ Certified* Level III+ ballistic protection in a mission ready setup designed for overt use. Built for law enforcement, first responders, military personnel, and prepared civilians, this package combines the