This makes it sound like the only way a person could reasonably use a firearm is in self defense, but what about recreational shooting or hunting? It’s certainly the case that many shooters enjoy trying a friends new firearm. I can also see many scenarios where new shooters need to share a firearm with a more experienced shooter - that could imply that kids learning to hunt turkeys with grandpa would have to submit fingerprints to the government before being able to participate.