I'm planning out a SMR rifle build and have had a rather difficult time unearthing any concrete documentation pinpointing the exact date ranges of these rifles. I know during the Revolution these types of "poor boy" designs existed and were used by the Over the mountain boys, however I'm coming to the conclusion that the term SMR, poor boy and barn gun is used very loosely to describe a broad category of arms used along the Appalachian region and into Kentucky. I just don't see iron furniture being referenced until the later part of the 1790's and into the early 19th century. Does anyone have more sources or concrete evidence concerning these great rifles they would be willing to share? Thanks gents!