18mm (.70 caliber). 9" wedge-retained round barrels. SN: NSN. Bright finish with Damascus patterned barrels, brass triggerguard, butt cap, and entry pipe, European hardwood stock. Double barrel smoothbore muzzleloading percussion pistol. Back action percussion locks are unmarked and utilize two triggers. No external markings, but the bottom of the barrels have Liege proof marks. A lanyard ring is present in the butt and a button head steel ramrod that is full-length and threaded at the end is secured under the barrels.