The barrel is signed "S+S" for Samuel St. Clair (1793-1849) of Snyder County and Juniata County, Pennsylvania. Many of the details resemble other rifles signed "S.H. St. Clair." The eight-groove rifled barrel also has light circle designs on the muzzle and traditional blade and notch sights. The rifle has a "LONDON/WARRANTED" lock with a frizzen spring roller and double phase double set triggers. The rifle has brass furniture, including a wear plate on the grasping section of the forend, a four-piece patchbox with pierced sideplate and finial designs, a long comb plate, and a rectangular toe plate. The furniture features light wavy line, scroll, and floral engraving. The rifle also features twelve silver inlays with wavy line borders. The inlay on the cheekpiece is in the shape of a crescent moon in the same pattern as others from this riflemaker. The highly figured stock has incised molding at the front of and below the flats, along the bottom of the butt, and along the ramrod channel and incised scroll, floral, and checkered designs on the left side of the butt.