Third Model represents an attempt by investors to use remaining parts and close out production. The .54-caliber Third Model was a muzzle-loading rifle, with a ramrod mounted under the 26.5" barrel. Same frame as used on First Model, but trigger was more of the conventional type. Trigger guard had a bow in the middle giving this model a distinctive appearance. This variation was produced in 1852 and marks the end of early conceptual period in repeating rifle development.