You'd think that an editorial headlined, "the founders meant what they wrote about arms," would perhaps actually quote something from the founders wrote about arms. But he doesn't.
Argh! I hate bad punditry.
However, please beware of any discussion about the 2nd A. that doesn't mention its relationship to the 14th Amendment.
More specifically, John Bingham, the main author of Sec. 1 of the 14th A., included the 2nd A. when he read the first eight amendments as examples of constitutional statutes containing privileges and immunities that the 14th A. applied to the states. So there is no doubt in my mind that the 2nd and 14th Amendments protect the personal right to keep and bear arms from both the federal and state governments as much as any other constitutional privilege and immunity protects other personal rights.
See the 2nd A. in the middle column of the following page in the Congressional Globe, a precursor to the Congressional Record.
http://tinyurl.com/y3ne4nNote that the referenced page is dated for more than two years after the 14th A. was ratified. So Bingham was evidently reassuring his colleagues on the scope and purpose of the ratified 14th Amendment.
It confounds me how few gun-grabbers and Courts bother to read the public writings, correspondence, journals, and documented testimony of the FF's. I've read them. They could not be more clear. Too bad they couldn't foresee how their militia clause would be so distorted. That goes for other clauses, especially the "General Welfare" clause.
That one is the end all for every give away the US has dealt with for a hundred years or more. It is probably the most cited for any dim/socialist.