If he wins. No more buying guns, parts, ammo for a gun online...
If you notice, Biden is referring to the AR and it's various clones and using the methods used in the 1934 Federal Firearms act. No Guns were banned under that act. And that Act is still in full force. All that has to happen is, the AR-15 has to be listed on the 1934 Federal Firearms Act with an amendment to it. That takes an act of Congress and a Presidential signature to make it a law as an amendment. Before you gunnutters go off (and I know you are) read the entire 1934 Federal Firearms act. But know this, MOST civilian weapons cannot be added to the list of weapon on the 1934 Federal Firearms Act. The AR and the AK are different and can. Now, will they?
If they are added, then sales of parts to manufacture, repair or build will be removed. And as they are found in criminal cases, the weapons are seized and destroyed. The Public is given the option for a buy back program. Only EFL and FFL people may buy and sell them or even have them passed on from generation to generation. To obtain an EFL, it's about as simple as passing a normal Firearms Background Check to buy a gun at your local gunshop. There is a lot more to it but those are the high points.
They DON'T come to your home and confiscate your firearms unless you are a feloneous Convicted Criminal with a history of violence. No, they don't come to your home. It's all done through attrition. It takes at least 10 years to see any results. The 1934 Firearms Act got some really bad news weapons off the streets and did it without firing a shot nor dragging people off to prison with the exception of the Criminals.