Produced between 1817 and 1820. Brass blade sight on the split barrel band, with the breech marked "P/ US" and the backstrap going clear from the breech to the buttcap. Markings on the lock plate are fading, with the "S" of "U S" and "MIDLn CON." legible. Smooth grip with a hickory ramrod, iron trigger guard and buttcap.