Full length wood stock. Round barrel, smooth bore. Front and rear sights, rear sight is one of the left. Steel ramrod inserted in stock. All metal parts of steel. Large trigger guard and directly in front is a trigger like lever which when pushed inward and up exposes breech block for loading and when it is pushed downward it automatically locks with a catch that is on the lever. Three metal stock binding bands. Arm is equipped with a triangular bayonet 18-3/8 in long with tip broken off (b not shown).; .52 caliber rifle. U.S. Model 1819.
This J. H. Hall rifle was the first breech loader to be used by the U.S. Army. John H. Hall, a Main-born inventor, pioneered in the production of breech-loading rifles made with interchangeable parts. It was granted a patent for the arm May 12, 1811.