Yes the difference between AR and M is one is auto and one is not ----- Unless you buy a bump stock and then use it to mow down lots of people. Tell me why did the Los Vegas mass murderer use an AR15? Was it because it was just like a Ruger or Remington? Or was it because for a few bucks he could make it into a M16 style weapon?
I wonder why (not saying you - everyone is NOT like this), gun lovers are not happy with the Ruger or Remington as you talked about?
Does it have to do that the AR is a Military style weapon with large clips? Why do the magazines and web communities around those guns always talk about and show military or militia iconography and talk about the government taking "our guns". And why are so many owners also dressed in military (not hunting) garb.
FYI - I grew up with guns. My dad and mom were both hunters. I have no problem with guns for hunting, I do have a problem with people who fetishize guns and feel like their desire for a deadly weapon overrules public safety.
This does not look like something for shooting deer or rabbits.
https://youtu.be/K2IOZ-5Nk5k