Yeah, and the AK47 can punch through railway tracks... Give me a break from the Soviet propaganda.
I looked at a lot of information. From the test documents:
In the tests of 1927 - the penetration was checked on inch boards supplied 1 inch. In addition to firing at 700 and 1000 steps.
Here is the data:
The penetration: shooting was conducted on 200 steps, (12 rounds):
1, 2 and 3 boards broke through all 12 bullets.
4 th - 8 bullets broke, got stuck - 4.
5th - broke through 4, stuck 3, rebounded - 1.
6th - broke through 0, stuck 1 and bounced - 3.
When shooting at 700 steps - a bullet punches a 1.5 inch board.
When shooting at 1000 steps - a bullet punches a 0.5 inch board and gets stuck in the rear of the inch board.
So if Relic is not too lazy and will make this small model, then the Soviets will have an interesting NKVD-themed STG analog.