Absolutely untrue. The RKBA derives from the natural right of individual self-defense. This nonsense about overthrowing the government and killing federal agents may give INVAR wood, but it's not the purpose of the Second Amendment. The 2A is concerned with ensuring the men and material necessary to defend the nascent United States, not to overthrow it.
No one is advocating regulations that would infringe upon the natural right. Registration (if not insurance) is, IMO, specifically contemplated under the plain language of the 2A.
A well regulated (controlled) militia (army) being necessary to the security of a free state (you have to have one to defend it from outsiders, but it has to be controlled to keep it from taking over) the right of the people to keep and bear arms shall not be infringed. The people, armed, are the ultimate check on government power, as projected by the standing federal army. If you had read and comprehended the Federalist Papers, you would know this. It is that simple. All this symantic contortionism to try to shoehorn a right of the people into some sort of reserved for the Militia only right is just nonsense.
Recalling that the just powers of Governments instituted among men for the purpose of securing their rights are derived from the consent of the governed, when those governments no longer pursue that aim but instead seek to destroy those rights, it is the duty of men to alter or abolish them, and keeping that ability is what is sacrosanct. It isn't for the purpose of overthrowing a legitimate government, as defined in those terms, but for the purpose of keeping that government legitimate.
Registration is a precursor and a valuable tool for confiscation, and is an imminent threat to the Right. You keep babbling about "registration and insurance" as if that will make it any more reasonable: it will not. Firearms account for some of the mruders in the US annually, but a variety of objects from miscellaneous blunt instruments including everything from tire irons to rocks and common hand tools to edged devices, to ligatures of various sorts, to fists and feet are used to take the lives of other people. Are you going to have women register their pantyhose because they have been used to murder people too? Every length of rope, plank, or bar of metal? Every kitchen knife? Get real, quit pissing around with feelgood nonsense, and focus on the cultural problems which have made these crimes more common.
Reinstate the death penalty for Murder, maybe there won't be so much of it, and a lot fewer repeat offenders.
Put God back in the schools, mainly because the idea that you might be held responsible for your actions by a higher power acts as a deterrent, even among those who profess not to believe. People have been as free to ignore Him as they do their Algebra lessons, only it isn't on their report card.
Tone down the rampant slaughter in media that desensitizes people to the idea of taking a life, and the attitude of polarization so common in our culture today which is all or nothing to the extent of letting something go or killing someone over it with no in between--and before you
even attribute that attitude to supporters of the RKBA here, kindly keep in mind that we have already put up with a tremendous number of infringements codified in some 20,000 laws molesting the Right to Keep and Bear Arms, we have just hit our limit. Not so much "none" as "no more".
And last, but far from least, restore the sanctity of that most fundamental Right, the Right to Life. When the most innocent and helpless among us are slaughtered without compunction in numbers which outstrip the most diabolical of regimes in history, for the 'crime' of being inconvenient, then the door is opened to the slaughter of anyone for which any reason can be contrived, no matter how thin that justification.