I remember seeing a few examples like this in physics:
Demonstrating the law of conservation of momentum with a M1 Garand.
I wonder if lots of publishers are getting pressured to swap them out for different examples? Wouldn’t want to scare anyone. If a police officer or a soldier was holding the gun it might be a little more acceptable, but still unnecessarily scary. Probably better to use a non threatening cannon instead. haha
Hat tip: Eric