The Model 1819 rifle designed by John H. Hall is a historically significant weapon. It was the first breech loading firearm adopted as a regulation arm and the first firearm successfully produced with completely interchangeable parts. The Hall rifles were primarily manufactured at Harpers Ferry Armory under Hall's direction with help from machinery designed and setup by Simeon North of Middletown, Connecticut. After Hall's patent expired in early 1827, North manufactured 5,700 of these rifles in Connecticut. It has the standard markings and features.