Yes, the Constitution limits state govts as well, a slight misstatement written in a hurry.
Your obtuse pedantry is not useful. Particularly when it appears you still have missed the main point of the previous statement—that the Constitution limits government, not citizens.
Also, these laws restrict children, not adults as you're suggesting. Basically this whole subthread is irrelevant. Good day.
That said, I'd like to see some restrictions/consequences around gun violence in homes, but unsure how that conflicts with 2A; IANAL.