Miroku 1861 Springfield Sight Question

[Gray Ghost]

Does anyone know if the R. Cross sights made for an original will fit the Japanese '61 ? At the very lease, would the sight leaf screw have the same threads ? Thanks

[bobanderson]

Does anyone know if the R. Cross sights made for an original will fit the Japanese '61 ? At the very lease, would the sight leaf screw have the same threads ? Thanks
Just spoke to Rich for you. His sights are identical to original ones. He thinks the Miroku base is wider than his leaf and the Japanese screw is metric. He said one option is to buy a complete Cross sight from one of the sutlers, such as Lodgewood.