The Harper's Ferry Armory M1819 Hall Breechloader is a usa-made breech-loading rifle chambered in .54 Hall, introduced in 1819. Primary use: collector. Type: Rifle Action: Breech-Loading Caliber: .54 Hall Capacity: 1 Year introduced: 1819, USA Weight: 104 oz Overall length: 43.5" Status: Discontinued Military use: Yes Intended use: collector