Oddly enough I also have a 28 gauge double hammer gun marked American Arms. I bought it approx. two years ago at an advertised estate auction. It was laying on a table of parts guns with no left hammer and no forearm and a cracked buttstock. Metal and bore were nice. I made a hammer from a 12 gauge and a forearm from the same. Buttstock got the two ton epoxy treatment. All I remember is a lot of bench grinding, filing, etc. The bid price was $60.00 so I have that in it plus my time. It doesn't look too bad {in a dark room} and shoots well. Worst thing about it is the stock drop, from the side it looks like a boomerang.