As usual, you leave out part of the story. Colt purchased the AR 15 from Amarillite when they ran out of money. After some tweaks it was sold to the Military as teh M16. Colt retained the copyright for the name. Then designed a Semi Auto specifically for civilians and Law Enforcement. A single shot per trigger squeeze. They needed to name it something so they used the AR 15 name.
If that weapon was the same as the M16 it never would have gotten the blessing of the Government o market it specifically to civilians.
Modern Rifles are designed specifically for civilians and have no battlefield applications.
We can stop right there.
And you can stop with the Forrest Gump routine and return to the topic you are diverting from.