I think grabbing guns is a no-go for me, now that I think of it. Carroll Quigley said that the reason the West developed democracy and the East did not was that the West had cheap, freely available guns and the East did not. The claptrap about how the West had Christian democratic leanings is pure bullshit in that light.
Them Greeks and their guns. Everyone knows Aristotle would put a cap in any foo's ass who crossed him. And the Roman Republic, which modern democracy is based on? Brute obviously was rocking a m16.
Also; it is believed that some of the Indian states from 6th century to 4th century B.C.E. were democratic.
Now, if you mean ADOPTED democracy, I think you might have a better argument. But if you mean developed democracy... yeah, tell me more about those guns the ancient Greeks and Indians were rocking, please. Even if you mean adopted I think it ignores a shit-ton of cultural and geographical reasons and is wrong... but you could at least make an argument for it.