From The Manufacturer/Wikipedia/People Smarter Than Us:
The EMF Great Western II is made by Pietta’s Italian craftsmen in Brescia, a region famous for making guns since before the Revolutionary War. Alessandro Pietta, SASS Life #41531 took a page out of history books and reintroduced the 1873, paired with the 1860 Army grip frame. He added a competition trigger that is wider and set back, allowing for a larger finger in the trigger guard.