In Colonial Frontier guns, the French guns that Hamilton classified as Type "C" has a brass rear sight. The English type "G" or Carolina guns also has a rear sight......In both examples the rear sight is set back not far from the breech. I copied an original Carolina gun sight found at Fort Toulouse. If I were going to put a sight on a Fusil de Chasse I would pattern that type C sight......btw way...the dove tail on those things is shallow
David