Yes, and that doesn't even take into account 40 round AR magazines, 50 round AR drums 90 round AR drums, 100 round AR drums or 120 round AR drums, or beer cans with springs.
And, let's not start with Mini-14 magazines...............
Holy heck. This is like one of those supermarket contest where you guess how many gumballs are in the huge jar. It's probably in the tens and tens of millions. It wouldn't surprise me if it was 100 mil.