A recent study published in the Proceedings of the National Academy of Sciences reveals that across all political and social groups in the United States, there is a strong preference against living near AR-15 rifle owners and neighbors who store guns outside of locked safes. This surprising consensus suggests that when it comes to immediate living environments, Americans’ views on gun control may be less divided than the polarized national debate suggests.
The research was conducted against a backdrop of increasing gun violence and polarization on gun policy in the United States. The United States has over 350 million civilian firearms and gun-related incidents, including accidents and mass shootings, have become a leading cause of death in the country. Despite political divides, the new study aimed to explore whether there’s common ground among Americans in their immediate living environments, focusing on neighborhood preferences related to gun ownership and storage.
This picture is often used to draw out all the points you've made, to demonstrate that many people are unfamiliar with many firearms. The Mini-14 in this picture is one available configuration of the rifle. The most basic, simple, low capacity version. However, the Mini-14 is fully capable of using 20 and 30 round magazines, a pistol grip, suppressor, bayonet, and even a folding stock (which the AR-15 can't do).
A better version of this picture uses two models of the Mini-14, illustrating how one is legal in California and the other isn't, even though they're functionally the same rifle. A firearm simply being black does not make it more dangerous. A pistol grip does not make it more dangerous or easier to hip fire for that matter. Any gun is easily hip fired, and I would suggest a non pistol grip rifle or shot gun is more ergonomic to fire from the hip as far as pulling the trigger is concerned.
The real argument should be whether semi auto rifles are more dangerous or not, not if specific semi auto rifles are more dangerous.