>>49904
>>49905
No it is rated for close distances.

https://en.wikipedia.org/wiki/List_of_body_armor_performance_standards

You will see that generally they seem to be rated at 5 metres. US standards don't mention a distance but a velocity instead but that velocity is fairly close to what it would be coming straight out of the barrel.

So level III is rated for.
>9.6 g (148 gr) 7.62×51mm NATO M80 ball bullets at a velocity of 847 m/s ± 9.1 m/s (2780 ft/s ± 30 ft/s).

Wikipedia lists 7.62x51mm M80 as coming out of a 22inch barrel at 2800 ft/s.

Most people would either have a level III or IV plate(or equivalent) or none at all. I don't think even AP 5.45 could get through them at close distances.

Here is a video of a guy shooting a Level III plate.