Quick Answer: Does Body Armor Really Work - …
· 41.4% of law enforcement agencies in the US use body armour rated at NIJ Level II and 35.0% use NIJ Level IIIA, which means most agencies use body armour which protect officers against at least 9mm rounds and . 40 calibre bullets, as well as . 44Mag and . 45Mag, but not against rifle fire or armour-piercing bullets.