So long as the government uses tanks and other armored vehicles against its people, that's not a reasonable restriction.
Kindly note that the constitution does NOT state that the right to keep and bear small arms [exclusively]...shall not be infringed.
I always thought to "bear arms" meant to carry weapons. "Arms" defined as that of the average soldier. Now you want to own a tank.
Do you know of anyone in the late 1700's,early 1800's, that personally owned a cannon? What makes you think that arms are meant to be any weapon? Seriously, I'd like to read it.