The official name for the annual commemoration is "Battle Road". The schedule for this year's event can be seen at
And, yes, you are correct about the French muskets. They arrived only after the war had already started. It is possible, however, that there may have been a couple of old pieces that had been captured during the French and Indian War.
There are several re-enactments of the 1781 battles this year, including Guilford Court House and Yorktown. If you wish, I can provide links.
And great to hear from you again!