In the last 40 years or so, the gun manufacturers through their mouthpiece the NRA and various flunkies in Congress and the media ran all types of commercials, documentaries, books, lectures telling America that ANY gun control legislation was a slippery slope to total gun confiscation and banning for the civilian population.
In all that time, the closest cousin to those predictions were the state laws that required home weapons to be unloaded and locked when not in use. This was to prevent theft and mind you, there were no reported enforcements of such a law (cops barging into a home and demanding to see how guns were stored), save for a plot device for TV action dramas...even Washington, DC relaxed it laws, and they were the strictest in the country at one point.
But NO CONFISCATION OF LEGALLY PURCHASED WEAPONS.
Even with the Brady Bill and the 1994 AWB, a plethora of revolvers, semi-auto rifles and gun, shot guns, etc., were available to law abiding citizens general population who could afford them. Individual state laws determined criteria for purchase/ownership in conjunction with federal mandates. And crime rates did not shoot off the charts.
And when the 1994 AWB was not renewed (thanks to the GOP vote), the very weapon(s) that were on that list have been the ones of choice used by mass shooting perpetrators.
Matters of facts, matter of history that consistent gun flunky mantras just can't shake.