The soft panels from IBA and IOTV armor are not technically NIJ rated but they are said to be approximately Level IIIA. We shot a .44 mag at the groin protector insert from IBA to find out if that’s accurate.
We shot the hell out of them with different pistol rounds at Ft Hood about 10 years ago. Only thing that penetrated was SS192 from a Five seveN pistol.
I bet it would hurt.