Bud get it in your brain: you will not solve the sort of problem that might require 26,000 rounds, as you are not a regimented militia or national guard. If we get invaded by ground troops from Canada or something, and we actually needed to call up militias, the government already has the guns and ammo stockpiled and will drop them off at your door, probably after seizing Amazon under the Defense Production Act.
Again, the problem you think you’re solving with 26,000 rounds isn’t legitimate. You’ve imagined it. You’re not Rick Grimes, you’re “unamed screaming guy 7.”