The “well-regulates militia” is all the gun owners protecting their homes against the enemy, whether that be the government, murderers, other militaries, etc. It doesn’t specify any type of gun that cannot be owned and operated, so, for instance, Bobby has an AR-15. That is his armory. It doesn’t matter what type of gun it is. Also, so you know, there’s no such thing as an assault rifle until you use it to assault someone. Here’s something, too: hunting is recreation, and, for many, a way of life, so if you want to take that away, you’re going to upset many people. Citizens who legally own firearms are not the problem.
Yes, there may be better ways, but it is still better than sitting there and watching it happen.