As repugnant as it sounds the Fathers did something for us that no other country has achieved and that is a more perfect union. We have been at peace with our own government for over 200 years with no violent changes needed to keep our government "in check" - we "revolt" in the voting booths.
Using your logic the ordinary public should be armed with 50 Cals, artillery, and nukes because the government and the military have them and we have to ensure they won't use them to keep US in check.
You of course mis-understand that the 2nd was written at a time when tyranny came from outside our borders and from the 1700s until now the military and the government has out gunned the private sector with nary a blip form gun owners saying that they need to have the same weapons as the government to keep the government in check.
Keep trying though
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