I'm always amazed when I see stuff like this how 'fast' events happened back then.
Serious gun confiscation began in April 19, 1775 at Lexington and Concord.
By July 3rd, an Army was raised and Washington takes command of it.
By March 17th, the British had fled Boston.
It took 3 months without modern communications technology to rally enough support for approval of an Army to stand against the King and to form it.
8 months later, the most formidable Army and Navy on the planet had been sent packing in retreat. (for that part of the war at least)
And what makes this even more impressive, is that save for a few early battles, this protracted siege consisted of only sporadic sniper fire and minor skirmishes.
It was the move by Washington to secure heavy artillery to cut off the water supply route that forced the British to evacuate.
I'm comforted when studying this war against the claims of fear from those of today that American patriots would not "stand a snowball's chance" against our own armed forces.
If we did it before, we can do it again if we are left no other choice.