You should really ask anyone who has ever served in the US military what they think would happen if they had to fight the US public. There's a lot more to worry

You should really ask anyone who has ever served in the US military what they think would happen if they had to fight the US public. There's a lot more to worry about than "someone owning a handgun". A lot of people think that the tyrant would just nuke parts of the country, but that's not how it would go. You need boots on the ground to occupy an area, and those boots would encounter a lot of resistance. Also, do you remember what just happened in afghanistan?