I'm looking for a powerful sidecock or undercock (fixed barrel) air rifle for small game hunting.  Was looking at these two rifles.  Am I correct that the only difference between these two is the stock?  Most likely I would get the combination with the scope, just to simplify things.  I have heard the scope which comes on top is not too bad.  
Any other recommendations?  I was also looking at the model 54 with that recoil reducing system, but too many bucks, and I don't really mind the recoil of an airgun either, doesn't affect my accuracy too much.  $450 or so for the model 52 with the scope is the very top end of my price range.