File:Superposed flintlock 1824.jpg

Simeon North of Middleton, CT, adapted a number of Model 1817 flintlocks into four shot, superposed load models for militia use in 1824. The muskets were modified by adding a section to the rear of the barrel containing 4 touchholes, a brazed on bracket, and a sliding pistol lock to fire the charges.

Charles Winthrop Sawyer (1920). Firearms in American History, volume III. Cornhill Company, Boston. Page 126, #6

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