The militia was required to have a musket, ball, powder and a bayonet equivalent to that used for military service and to drill with same. The rationale that the people would be armed with the same arms as a regular army troop means that what they had they not only could have but should have.
Off the top of my head I am thinking that was the second militia act of 1792 but don't take my old memory's word for it.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.