Ya, the receiver is the easiest part to hold in the bench vise. You can see some torque kisses on the side front trigger guard screw boss too. Crank on her hard Bubba!
I've recovered a lot worse. The marks can be cleaned up and reduced. Too bad they are right over some important stamped markings.
But one positive is that, if it was the receiver that was held still in a vise and the barrel turned out, it might have avoided being twisted and distorted to hell by a tire iron up though the body to turn it off the barrel. I can only imagine how the take off barrel looked.