first thing, we'd all have "assault rifles."
everybody who could, would buy an 80% lower, and manufacture a true assault rifle with it. they would make extras, and sell them.
everybody who could, would manufacture a handful of drop-in auto sear devices, and modify existing semiautos which operate with them. additionally, many people with the almost-there variants would switch their buffers and carriers so that a DIAS would function in their rifle. they would make extras of these, too, and sell them.
second thing, ammunition would no longer be scarce.
everybody who could, would produce lots more of it. there's no telling how much you'll need in the civil war that ensues after a ban on private sales, a ban on semi-autos, or any other new gun control law we find repugnant. when there's no telling how much you'll need, you make a lot. extra. and sell it.
third. law enforcement would be cucked first. local and then federal.
see "red dawn" for an idea of what happens to police chiefs, sheriffs and mayors (the tune "stuck in the middle with you" comes to mind). only, in that movie, the invader is a known foreign country. in this scenario, the elements of treason to the republic are not all out in the open, they are mixed together in government, (((news media))), and some (((entertainment))).
then there's the uncontrollable violence.
ambushes would be a daily occurrence for both sides. a number of prominent public figures would be assassinated. we have all been keeping tabs on who has enabled gun controllers to believe they can get away with their plans, whether they are all talk, or actually back it up with some action. but now, because we know who's who at the outset -- and that gives us strategic advantage to compliment our tactical advantage of assault rifles, IEDs, improvised RPGs, improvised rifle grenades, plus some sweet-ass vehicles -- we only need to stay in the know. enter the intelligence network.