>>64253196
Think again. Also, if you're worried about engaging armor you need to figure out how to deal with shields, too, and those have greatly superior coverage and usually come with a bonus 4-5 extra shooters behind them too.
Shields exist on a three way intersection of cost, coverage, and weight. Rule of thumb. If a plate can be hand carried and is full-body coverage it's most likely rated to M855A1, tops, unless you pissed off the wrong people and it's some boron carbide custom. If it's on wheels and wasn't made decades ago there's no piercing without M993 or above on your side.