Simeon North manufactured approximately 10,500 of these carbines between 1844 and 1855. They saw action during the Mexican-American War and many were rifled for use during the Civil War. This example retains its original smooth bore barrel. The top of the breechblock is marked "U.S/S.NORTH/MIDLTN/CONN./1844." There is a "JN" on the right side of the barrel at the breech and single letter inspector marks on several components. The stock has "WAT" (right) and "JH" (left) cartouches.