Anybody know or heard of a gunsmith that can do it? Using the existing screw holes on a barrel should be enough but I have not found such an animal in my no-gunsmithing type searches. With every AR in the country now having rails from one end of the gun to the other for the versatility they offer it seems strange to not have the option on a simple single shot. Why you ask?... In my state handguns with open sights only are allowed for Turkey but during deer season I would like to add a scope or red dot. The rail (and clamp on iron sights ) give me that level of versatility in one barrel for the changing season. I obviously could buy an extra barrels but they are dang near $300.