Of course it would take the passage of a new federal law to implement registration (and the repeal of the existing law law that specifically prohibits it). It's no secret that there are many who would like to see such registration passed; and if they did, it would definitely be cause for harsh 2A measures against anyone attempting to enforce it; but I just don't see it happening any time in the foreseeable future.
I also don't think the Executive branch will try to put any hard limit on how many guns a person can sell before they will deem them to be "in the business" and required to get an FFL. That would limit their ability to bring suit. They have indicated that they prefer to leave things vague and reserve the right to go after anyone they in their sole discretion think is in violation.
I also don't think the Executive branch will try to put any hard limit on how many guns a person can sell before they will deem them to be "in the business" and required to get an FFL. That would limit their ability to bring suit. They have indicated that they prefer to leave things vague and reserve the right to go after anyone they in their sole discretion think is in violation.