Try reading up on NIJ armor levels, specifically IIIA (soft, kevlar armour) and IV (Ceramic hard plates). There's also many youtube test videos, showing tests on vest, people wearing vests, and combat footage of soldiers shot in vests and helmets. I know that there is much complaining about how many shots it takes to drop someone, but this will encourage people, specifically snipers to think about shot placement. Also you guys should bear in mind that stamina does really (really) suffer when you wear hard plates. The vest is worn tight to stop it from jiggling when you run, which leaves you extremely short of breath when running. Read into this subject guys, this is one area where this game (and every other) really lacks. Feel free to email me about additional info if you guys choose to take this on.