Gentlemen, I'm looking for info on this shotgun I found in a local pawn shop. It is a Steven 520; early model with the "double hump" and "suicide safety". The barrel has been crudely cut down to about 25". What is so intersesting and different about it is the fact that is has very nice wood and an English straight grip. The lower tang of the receiver is straight and the wood to metal fit is excellent. It has a "toostie roll" forearm The butt plate appears to be original and fits perfectly. The receiver appears to have been case hardened (now very faded) and not blued. The serial # is 35xxx. I've not seen another like this and wonder if it came from the factory this way. It would not be unusual for an old gun like this to have been refinished and restocked but the straight lower tang would not fit a pistol gripped stock as usually seen on 520's. Any body have info or an educated opinion about whether this is a custom, factory order gun or a very well done frankenstien.