I'm going Friday to look at an old 39x,xxx (all the numbers I could remember) riot gun. How can I tell if it is a real riot gun or a cut down? I've looked on line enough to know it is about 1908 manufacture but I'm not sure what details to look closely at. Ball park, what is a 30% riot gun worth and what is a 30% cut down worth? I have been told it's stiff but appears to function correctly.
Thanks!