[WayneS]

The phrase “well-regulated militia” (which when it was written meant well trained and drilled) COULD potentially be interpreted by some to mean members of the militia would be required to undergo firearms training.

Other than that, nothing.

[Pollster1]

The phrase “well-regulated militia” (which when it was written meant well trained and drilled) COULD potentially be interpreted by some to mean members of the militia would be required to undergo firearms training.

Nope. Grammatically, the militia clause is explanatory and does not modify the subject (the right of the people to keep and bear arms) or the predicate (shall not be infringed). If taken literally, which the entire Constitution should be, requiring firearms training is an infringement and unconstiutional.