Only in some mutant form of English."A well regulated militia being necessary to the security of a free state, the right of the people to keep and bear arms shall not be infringed.""
Where is the "and" part in that? The subject is "a well regulated militia".
But, even if so, the right of the people to keep and bear arms shall not be infringed.
Not the milita, the people.
Only as it applies to the security of a free state.
Simply not true. That is but an example of why the right shall not be infringed, it is not the sole reason nor is it even the main reason. The comma means that it is just a descriptor for the body of the sentence.