The United States constitution clearly states that a "States militia must be well regulated and maintained." A weapon of a "States militia" is an assault rifle. Any ban would violate the United States constitution.
More pretzel logic from the party of twisted thinking. Reading the Constitution, the second Amendment says: "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." It doesn't say the "unfettered right of the people" shall not be infringed, so the law provides for regulation of gun rights. Only the right to own a gun is guaranteed.
And no you are not guaranteed the right to military grade weapons. Not to mention that while the technology existed to make repeating weapons, they were both difficult and expensive to make, and were not widely available until 1830. It took a minute to reload after firing and prepare for another shot. One mass shooter in the mid-West shot 30 people in 30 seconds with an AR15 a couple of years ago. Those guns should not be on the streets, and I'm thinking the Founders would be shocked and horrified and what has happened to the USA as a result of the 2nd Amendment.
A militia is defined as "a military force that is raised from the civil population to supplement a regular army in an emergency". You have to be a member of a "well regulated militia" to have unfettered access to weapons under the Second Amendment. That would be the National Guard, so if you're Guard Member, you get to have a gun, but otherwise, not so much.
The AR-15 is a regular, plain rifle.......it is no different from any other semi-automatic pistol, shotgun or rifle...it is no more deadly than any of those.....
There is only one mass public shooting where the rifle had an advantage in the shooting, and that was Las Vegas, where the range was over 200 yards......but he was also firing into a tightly packed crowd of over 22,000 people, at night, from a concealed and fortified position.......with his initial shooting masked by the concert.
And had he not had that crowd trapped in that concert arena, he wouldn't have been able to kill as many since they would have run away or found cover.....since shooting at moving targets at hundreds of yards is incredibly difficult....
At the range of every other mass public shooting a rifle has no advantage over pistols or shotguns.......
For example....
Boulder, rifle 10 killed
A 7 shot, pump action shotgun..... murdered 12, like the Navy Yard shooter...
A 5 shot, pump action shotgun..... murdered 20 people and wounded 70, like the Kerch, Russia shooter...with the local police station 100 yards away....
9mm pistol, and a .22 caliber pistol with a 10 round magazine and murdered 32 people like the Virginia tech shooter...
2, 9mm pistols and murdered 24 people, like the Luby's cafe shooter....
double barreled shotgun, and a .22 caliber bolt action rifle...and killed 13 people, like the shooter in Cumbria, England did....
That rifle had no special advantage in a mass public shooting.