You can do a lot of damage with IEDs, but you can’t overthrow the government with IEDs.
Look at Turkey. The primary tool was encrypted communications and information dissemination. That’s modern power that citizens should have. Right now power comes from information and the preservation of speech and private communications, not a few handguns and rifles (or IEDs).
When the 2nd amendment was written a gun was relatively way more powerful than it is in today’s world. If you had a group of men with guns you were basically on par with the government military.
Who has the better chance at ambushing and getting away with the enemys weapons: the one with the gun or the one without a gun?