I respectfully reject your unsubstantiated premise about banning all guns, that's simply a scare tactic. There are more guns in circulation that people in the USA. Second, the Supreme Court has ruled there may be narrow restrictions to the 2nd Amendment. I suggest you read and reply to my post on this topic, which has received major engagement...

https://medium.com/the-political-prism/debunking-4-major-myths-of-an-assault-weapons-ban-in-wake-of-georgia-school-shooting-8f0ee9d4512b?sk=ba139af1b88f51c86b022afdc37d059e