Bulletproof vests are believed to only block pistol bullets and are defenceless to rifles or even machine guns. From pistol bullets (.22, 9mm, .45, etc.) to common rifle bullets (7.62mm, 5.56mm, 5.8mm, etc.) you can find specific levels of body armor to be effectively defended. And the most common body armor of modern military equipment, basically to the United States standard level 3 or higher. Some elite special forces are even equipped with U.S. Level 4 standard bulletproof panels that can withstand m60 machine guns from 10m away to fire NATO full-power bullets. It can be seen that modern body armor has long been more than only to defend pistol bullets this level of defense. This misunderstanding actually comes from people's misunderstanding of level 1 body armor, thinking that this is the general level of bulletproof vest, in fact, not.