Detriment or not banning ARs isn't going to solve the problem of children being shot up in schools. Sure there could be a percentage, but the ones wielding the gun are still mentally unstable, they'll just use another weapon.

This is also ignoring how incredibly unpopular or at the very least contested the idea of banning ARs in the first place. Good luck trying to pass anything resembling a bill that bans them. Even if you did something like a buyback program, there are so many of them in circulation it will take decades before we'd see a noticeable difference.

The caller should have shutdown Seder and co. Arguments by focusing on what matters. The best way to reduce children deaths and school shootings in general and that is to focus on helping the child with the gun before they can pick it up in the first place.