That's why the government should never be permitted to disarm the people to any degree.It's founded in the illusion that individuals possessing firearms are safer than those not having them. And that's true to a very limited extent. Yes, safer perhaps from a home intruder, that's about it.
But safer from a oppressive government, able to resist, defy and even over throw such a government. VERY questionable. If the Govt. wants you badly enough you're toast, that's all there is to it.
Just because that's the reason you or someone you know has or does those things doesn't mean it's the reason everyone has or does those things.In such a "revolt' small arms such as rifles & pistols would be useful only for assassinations of Govt. agents, perhaps raids on isolated rural National Guard Armories to obtain serious weapons.
Basically the guy with a stack if AR-15's with 10,000 rounds of ammo in his basement is like the guy sitting at a stop light in city traffic in a Dodge Charger with 707 HP. He's just having a macho-man fantasy, that he has POWER and he sure LOOKS good! As i said, it fosters an illusion of individual power, control.