1. The NFA (1934) instituted strict regulations on ownership of machine guns (full auto and other firearms). And you better believe these weapons are in a federal registry, ie., BATFE knows who has what. In today's AP/ cultural Marxist jargon, they are branded as "weapons of war". Hard core believers in the 2nd A believe these firearms should be available to private citizens/ militia because they would be necessary to confront the federal standing army/ LEOs.
2. The GCA (1968) instituted ATF form 4473. These records are still being collected every time someone buys a firearm from a FFL dealer.
3. The FOPA (1986) specifically prohibited the BATFE/FBI/DoJ from converting the piles of ATF 4473s into a national firearm registry.
4. The FAWB (1994) implemented a 10 year ban on commerce of a subjective list of assault-style rifles. Weapons of war/ assault rifles are accepted by 2nd A defenders as being fully automatic, i.e., subject to the NFA (1934). This temporary ban applied to semi-auto rifles (assault-style) that were cousins of their fully auto military versions (assault rifles). The difference being = semi auto rate of fire (1 finger squeeze/ cartridge) to empty a 30 round magazine ~7-15 S while fully auto rate of fire (1 sustained finger squeeze/ empties all cartridges in a 30 round magazine) ~3 S.
5. As pointed out in this article and echoed by many Freepers on this thread, the states of CT and NY passed gun control bills in the aftermath of the 2013 Sandy Hook Elementary School Massacre in Newton, CT. The bills required legal owners of AR-15s and similar assault-style rifles to register them with their states. The compliance rates were failures. The states had no way of forcing compliance because they did not know who owned what - a necessary element of a firearm registry.
6. Biden/ Harris will pursue a course of action to re-new the FAWB (1994), except this time there will be no sunset provision, i.e., permanent ban on all commerce of assault-style firearms. It is likely the 1994 subjective list will be expanded to include all semi-auto rifles.
7. Biden/ Harris will pursue a course of action to develop a national firearm registry that will identify legal owners of assault-style rifles. They have 2 options available to them: (1) re-classify assault-style rifles as weapons of war and regulate them under the NFA (1934) or (2) Nullify that clause in the FOPA (1986) that prohibits Fedzilla from converting ATF 4473s into a national firearm registry.
8. Which all leads to confiscation. Once a national firearm registry is in place, Fedzilla has the necessary legal sledge hammer to proceed to confiscation at its discretion.
9. Most 2nd A defenders fear Fedzilla knocking on their door to confiscate their firearms. While there are many DemonRats who are wetting their pants in anticipation of this, cooler heads will likely prevail that will not put LEOs in danger of face-to-face shoot-out confiscations. A more likely scenario would be; 1st - establish a drop-dead date when all assault-style/ semi-auto rifles must be surrendered at designated depots and 2nd - weaponize the IRS to assess penalty fines for non-compliance. This can be easily applied to bank accounts, SS checks, FMC/FMA mortgages, Medicare/Medicaid distributions, etc. Few citizens will be able to withstand that kind of financial pressure.
Also, many, many firearms that Americans possess don't have a 4473 history...many firearms.