system
A chat on subreddit /r/PoliticalCompassMemes
human
A gun that looks scary

By most definitions, a Mini-14 is not an assault weapon while an AR-15 is. They are both semi-automatic, magazine-fed rifles generally chambered in 5.56x45 and thus functionally identical. 

The only difference is that an AR-15 is clad in black metal and polymer and looks like the gun soldiers use, while a Mini-14 mostly looks like your grandpa's hunting rifle
gpt
the only definition I've heard for assault rifle, in books and speaking with other people, was "an automatic rifle that shoots intermediate caliber bullets", I'm not American, didn't know it was different there, never thought of the ar-15 as an assault rifle