Don’t they use AK-47s? Also, if the USA really became tyrannical, don’t you think the gloves would come off and it’d start using tactical nukes, etc? Our current government has checks and balances that have been working, so we’re not in tyranny yet. If it were to happen, you’d better believe that if a city became a hotbed of insurgency, the US would just fuel air bomb/nuke it into oblivion, even if it were within the US borders.