Why not?
The interceptor body armor system consists of an Outer Tactical
Vest (OTV) and two Small Arms Protective Inserts (SAPI). The OTV is
lined with finely woven Kevlar aramid, these two parts of the vest
are both bullet and heat resistant. The vest was tested to stop a
9mm 124 GR FMJ at 1,400 ft/s (426 m/s) with minimal deformation and
has a V-50 of roughly 1,525 ft/s (465 m/s). This means that the
bullet has to be traveling faster than 1,525ft/s for it to have
more than a 50% chance of breaking through the armor panel. These
plates also come in five different sizes and go into the front and
back of the vest.
The Interceptor can however, not be called a Level III-A vest as
miltary standard does not require protection against heavy .44
Magnum munition. However, both Level III-A vests and Interceptor do
protect from much lighter 9mm threats in identical tests. The vest
will stop other, slower, moving fragments and is also equipped with
removable neck, throat, shoulder and groin protection. The vest has
a quick-release feature in which a quick tug would drop the plates
off of the vest if ever needed.
Two small-arms protective inserts may also be added to the front
and back of the vest, with each plate
designed to stop up to three 7.62mm NATO rounds (also known as USA
M80 .308 cal) with a muzzle velocity of 2,750 feet per second (838
m/s). The plates are the most technically advanced body
armor fielded by the U.S. military, and are constructed of boron
carbide ceramic with a Spectra/Dyneema shield backing that breaks
down projectiles and halts their momentum before reaching the
wearer.
The normal AK round is a 7.62 x 39... which at 710 m/s (~2329
ft/s) is quite a bit weaker then the NATO 7.62. The SAPI will have
no issues with a point blank shot from an AK.
