Ain’t America great!
Even if you are on the no-fly list, you can get your very own AR-15 assault rifle by mail from Sportsman’s guide, for under $600! Comes with a 30-round magazine! And with a little online research and a few tools you can probably convert it to fully automatic and have as much firepower as a squad of Korea-era American GIs.
Look, I own a couple of .22s and shotguns, and I sometimes hunt deer and game birds. An AR15 has no legitimate use in hunting game. Its only use is going crazy on a shooting range or else committing mass murder.