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Full video
https://t.me/ButusovPlus/13470
"Even in a gunfight, we'd just get our asses kicked by the simplest rifles."
Russian soldiers posted a video testing the "unparalleled" bulletproof vest "Module-Monolith," produced by JSC "Special Materials Research Institute" (St. Petersburg). During the experiment, all five bullets penetrated the armor plate completely. The soldiers expressed their dissatisfaction with the quality of the heavy and useless gear: "Just f*cking great. Thank you, Ministry of Defense."
At least for steel plate, it should work without any supporting material.
Kevlar around it would help catch spalling from a bullet flattening out and spraying little bits of shrapnel out across the surface, but since these ones aren't actually stopping the bullets, there is no spalling to catch.