No explanation needed, they stated how they felt about it pretty clearly:
"A free people ought to be armed."
- George Washington
"A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government."
- George Washington
"The strongest reason for people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government."
- Thomas Jefferson
"The Constitution of most of our states (and of the United States) assert that all power is inherent in the people; that they may exercise it by themselves; that it is their right and duty to be at all times armed."
- Thomas Jefferson
"To disarm the people is the most effectual way to enslave them."
- George Mason
"Americans have the right and advantage of being armed, unlike the people of other countries, whose leaders are afraid to trust them with arms."
- James Madison
"To preserve liberty, it is essential that the whole body of the people always possess arms, and be taught alike, especially when young, how to use them."
- Richard Henry Lee
"The Constitution shall never be construed to prevent the people of the United States who are peaceable citizens from keeping their own arms."
- Samuel Adams
"The right of the citizens to keep and bear arms has justly been considered, as the palladium of the liberties of a republic; since it offers a strong moral check against the usurpation and arbitrary power of rulers; and will generally, even if these are successful in the first instance, enable the people to resist and triumph over them."
- Joseph Story
While it was a different time, you get the idea.