Oh that ain't happening. Sorry but you have to get around the 2nd amendment firstly (That ain't going anywhere unless we rip up the constitution). You would require most law enforcement to be for it while ACAB typically cops are pro guns... I just don't see it happening in a nation where guns are a fundamental part of this country's history and ownership has been written into the fabric that bind this nation together. Restrictions are the only realistic option here. They work as we don't see an abundance of full auto firearms but a full ban would cause quite a bit of unrest.
Edit: did a double post but deleted it since wasn't sure if the indentation was working correctly and trying to keep the conversation in a single threadline.