In addition, guns have value to people for more than functionality. There's endless stories of people selling "back" their grandpa's WW2 take back piece that would be worth thousands of dollars to the right collector and would be restored and enjoyed for decades, only for a police officer to at best "lose" it in transport or more likely send it to be melted down for scrap so someone could get a $50 gift card and local police can post to Twitter about how another dangerous war relic is off the streets.