The changes and modifications of the Model 1812 prompted the Ordnance Department in 1816, to direct the Springfield Armory to make a new model musket to serve as a standard pattern.  The Model 1816 began production in 1817.  The changes from the preceding model include: the rear of the lock plate is rounded, the pan is brass, the top of the frizzen is bent forward toward the muzzle, the lower sling swivel is attached by a rivet to the guard bow, and the stock is combless. 

     Our specimen is marked on the lock plate in front of the hammer “”US” and eagle.  Behind the hammer is marked “SPRING” “FIELD” “1831” in three lines.  The rear of the barrel is marked “”P” eagle head “V” “17”.  The barrel tang is marked “1830”.  The top of the stock is marked “17”.  The butt plate is marked “US” “S”.  The left side of the lock plate is marked “S”.  The left side of the stock contains 2 cartouches “A2” “EJ?T?”.  The bottom of the stock has a cartouche “AH”.  In front of the trigger guard is marked “PT”.  The bands are marked “S”.  The barrel tang screw is marked “7”.  The bayonet is marked “US”.  The socket is marked “B” “W”.