If Biden gets elected and went the NFA route, that would be a shit show. First, those that are already in the hands of the people, are we grandfathered, if so, how do we prove it is a pre 2021 purchase. But who would honestly ask when it is a common rifle?
If existing need to be registered, we will only have so much time, I'm going to say 2/3 years but 5 would be more realistic once they realize they need a better user serviceable system. His delerious ass will say 1 year, to submit forms and tax money or sell (fuck that), the ATF and FBI will be so swamped it will take years for those who don't submit first. But you can't have your rifles of course while your forms are in process. So does your class 3 need to build an armory for the thousands of rifles he will get swamped with?
We are some of the most law abiding citizens and don't necessarily want to break the law unless of course he forces a gun buy back, then we are all outlaws. So if he makes routes that let us keep them and we have to pay the tax, fuck us I guess.
The more I type, the more I realize, shit most likely won't happen because of the sheer volume of rifles. They will notice it won't work. The vast majority won't comply, and will continue to use them. We aren't like others countries with a tiny population. Our country is massive with more guns than people. Good luck. The most they can do is ban the sales, but that will get the NRA, GOA, and now the ASA to sue.