I like it.

But I don't think it has to even be that complicated. At the ratifying of the Constitution, the states wanted to make sure that the central government would not overstep its bounds. Thus, they wanted to add declaratory and restrictive clauses which became the BoR. Everything in the BoR is either declaratory or restrictive, as per the Preamble. So,

A well regulated militia, being necessary to the security of a free state, (declaratory)
the right of the people to keep and bear arms shall not be infringed. (restrictive)

Just my $0.02.