Hi Dan, Lugerdoc has it right.. it's been converted...but, it may be able to be converted back?? It depends on if the knobs have been relieved to let the shell slide down into them, or... cut away to clear the knobs.. If you tap out the pin, and the mag shell is complete, we can put a nice Black Plastic Bakelite bottom in.. if not...we can recut the shell to fit the exsisting bottom.. at least i think we can.. gott'a see it apart first... It's altered, soooo, we can alter it again and make it more asthesticly pleasing.. At my house, it'll run you $35.00... but it'll be nice..and a better fit... best to you, til...lat'r...GT