Hello, my son has an old weopon that appears to be some sort of blunderbuss or shot firing gun. It is a percussion type, with a eight sided at the base barrel that becomes cylinderical as it approches the end of the barrel.The stock locks like beechwood and is full length and is easily removed. The gun has three distinc parts; barrel, hammer ignition area and the stock. There are two proof marks on the unexposed side of the barrel. The trigger guard is one piece and covered in the same ornate scroll as the butt plateand side plates. The name"FENTON" appears on the right side plate. The gun came with a loading rod and aiming device, both missing, however the retaining devices are still present. The barrel is attached by two slide pins and the trigger guard is slid forward into the stock and then retained by a screw at the rear. Any assistance would be greatly appreciated. Thank You, Greg Balbier