.54 caliber, 21″ barrel, breechloading action with sling bar located on the left side.  Walnut forend and buttstock bearing two visible U.S. inspector’s cartouches.  The barrel showing an even gray/brown patina with good stampings.  The receiver showing some mottled and graying case colors.  The breechblock much the same.  All numbers are matching.  Mint bore.  Very fine wood with minor handling marks.