5.56mm rounds defeat all body armor with correct shot placement.
Some 5.56 rounds, like M855 and the newer one will defeat some III & III+ plates.
I haven't seen any 5.56 rounds that will defeat Level IV plates.
“5.56mm rounds defeat all body armor with correct shot placement.”
Ahhh, I wonder about that. Recently I was browsing in my favorite gun shop and stumbled upon some body armor. I asked the sales person helping me fill my bag with AR15 accessories just what type of rounds will that stuff stop. He did say 5.56. I did not believe him, and asked again, he repeated himself.
The body armor was quite flexible and thin, it fit inside of a carrier. It had pockets in front and back where about 1” thick plates could be put. Now with both types of armor, the stuff fitted into the carrier and that plate, I bet it would stop a 5.56.
Due to the price, I passed on all of that.
Mozambique drill.
CC
You can shoot a lung right out, or a kidney or something like that with one of those. At least, so I’ve heard.