hey! wake up! machine guns (10-20 rounds per second) and grenade
launchers are already regulated by the firarms act of 1934. Uzis have
been banned from import for over a decade.

The founding fathers did not have "single shot fowling pieces" in mind
when they wrote the Second Amendment. They had in mind the freedom of
man from government oppression. Did you know the british marched on
Concord to sieze cannons? privately owned cannons at that?
The whole Second Amendment concerns the individuals right to keep and
bear arms, to keep the government in check.

Show me where the founding fathers have referred to "single shot fowling
rifles".

Uzis and AK-47's aren't "offensive" purpose. They can be used in
defense. They can also be shot for sport, or even just collected for show.
Your interpretation of the 2nd Amendment is frightening. If you are
truly a NRA member, please reconsider your way of thinking, as it could
become a wedge of compromises that leads to complete disarmenment.

John