Like the others have said it is a SB-1 with the barrel cut to 18 3/4 inches with sights. All the web sites claim them come with a scope base as well, but mine didn't. It is a very nice rifle, that barrel length is perfect. Looks good, shoots great! I have reamed mine to .357 max, but haven't got to shoot any of the big rounds through it yet. I just finished pulling two days of security for Mark Martin, Darrell Waltrip and Tony Stewart and will use some of the money to get reloading supplies...the things I do to feed my Handi addiction!