a couple of things to consider.
1. Keeping and Bearing Arms is a Constitutionally guaranteed right, no less than freedom of the press or of speech. While none of the rights guaranteed by the Constitution are absolute, I.E. freedom of speech does not include incitement or treason nor does freedom of assembly include riot, those rights cannot be abrogated simply by governmental whim or popular demand or even reasonable suspicion. The operative Amendment isn’t the 2nd , it’s the 5th, something about due process of law. To do what has been proposed above and nationally, for that matter, would violate the aforementioned 5th amendment unless upon issuance of a legal warrant or by adjudication by a court of law and, as a matter of fact, the NICS data base includes only those whose prohibited status has been so adjudicated.
2. For those who maintain that the 2nd Amendment doesn’t protect ownership of AR and AK style rifles:
In United States v Miller, 1939. SCOTUS ruled that the 2nd Amendment specifically protects “arms suitable for military formations”. You can look it up.