1851 Richards-Mason - In 1871, Colt employee Charles Richards was awarded a patent for converting Colt percussion models to breech loading cartridge revolvers. The Richards cartridge conversion was an instant success. On July 2, 1872, William Mason, another Colt employee, was awarded a patent for an improvement to the Richards model. Conversion models remained popular with cowboys (many originals will be found with imprints of fence staples on the butt) even after the introduction of the 1873 Colt®. This was due to the low cost of conversion models.
Man With No Name - Replica of the 1851 Conversion used in the 1960's Spaghetti Westerns.