In the Heller decision we find this:
United States v. Miller, 307 U. S. 174, does not limit the right to keep and bear arms to militia purposes, but rather limits the type of weapon to which the right applies to those used by the militia, i.e., those in common use for lawful purposes.
This is where the “common use” test comes from. This test is used by the forces of good to claim standard capacity magazines and semi-automatic firearms are protected from government restrictions.
But yet, there have been some cases where Federal courts have claimed AR-15s and AK-47 do not meet the “common use” test.
24/7 Wall St. has the list of the 50 Most Popular Guns of All Time. The AR-15 comes in at number four and the AK-47 at number 1.
As usual, the anti-gun forces have to lie and cheat to win.