Great article on US v. Miller
Here, "The Peculiar Story of US v. Miller. I think it totally "writes out" the case. The author's research is incredible, tracing Miller's story in detail, and concluding that the district judge meant to set up a Supreme Court case that would get himself reversed (his opinion struck down the NFA, but in reality he was a supporter of federal gun laws who had laughed off the Second Amendment). He explains one reason Miller is so brief and terse: its author, McReynolds, wrote very short opinions. And why there was no input from the defense: Miller's attorney was involved in a very hot political fight at the time.
The conclusion is that Miller is what I've termed a hybrid rights case: the right to arms is an individual right, but only covers military-style arms. That sort of ruling became popular in the mid 1800s, when the issues were largely arms laws regulating daggers, brass knuckles, etc.
Hat tip to Joe Olson.