The subject is a single shot break action 22 Hornet with a Mannlicher style forearm. Does anyone know the trick to getting the forearm off ? It came to me in a multigun purchase, and I know nothing about these. Any information would be appreciated. Is this a SB1 or SB2 ? What is the word on barrel fitting and interchangability ? Is the 20 gage shotgun easier ? They rifles seem to have almost a cult following, some of the the barrels i see on ebay are going for as much, or more, then I paid for this rifle, $249.00 +tax+deros/4. From what I read they are accurate. Any insite, suggestions or experience anyone can share would be appreciated.