Here is part of the press release, not so good…

Rule Seeks to Implement Provisions of the Bipartisan Safer Communities Act and Provide Clarity on Who Must Obtain a License and Run Background Checks
The Justice Department today announced it has submitted to the Federal Register the “Engaged in the Business” Final Rule, which makes clear the circumstances in which a person is “engaged in the business” of dealing in firearms and thus required to obtain a federal firearms license, in order to increase compliance with the federal background check requirement for firearm sales by federal firearms licensees.

“Under this regulation, it will not matter if guns are sold on the internet, at a gun show, or at a brick-and-mortar store: if you sell guns predominantly to earn a profit, you must be licensed, and you must conduct background checks,” said Attorney General Merrick B. Garland. “This regulation is a historic step in the Justice Department’s fight against gun violence. It will save lives.”

“The Bipartisan Safer Communities Act enhanced background checks and closed loopholes, including by redefining when a person is ‘engaged in the business’ of dealing in firearms. Today’s rule clarifying application of that definition will save lives by requiring all those in the business of selling guns to get a federal license and run background checks — thus keeping guns out of the hands of violent criminals

I think that the key word there is "predominant". Looks like a legal 'loophole', let's see how long it takes them to remove it. Probably a good idea not to mention it too much.

The Federal Courts have upheld convictions for as little as 1 firearm sale.

All this language does is codify Federal caselaw.

I think the civil side of this is one that should concern people. Sell a gun, no background check, and it gets used in a crime. Guess what can happen?

Thank you Biden voters.

Exactly!