Charleville musket

From Freepedia

The Charleville musket was the primary musket used by the French during their participation in the American Revolutionary War. These smoothbore muskets were named after the armory in Ardenne, France. It was also distributed to the Americans, and later became the pattern for the Springfield musket of 1795. They are 60 1/2 inches, with a 45 inch barrel, and have "U.S." stamped on the butt stock. This was done to prevent soldiers from taking them when soldiers discharged. It fired a .70-caliber ball.