i contacted a local gunsmith. he said for me to drop off my barrel and my current rifle upper to him tomorrow. he said that he will either try to get the parts from S&W or he will fabricate the parts needed. He wouldn't give me a ballpark on how much it will cost if he has to make them himself though. Kind of scary.

Major, I think you may be right. This is starting to get a bit complicated. I may have been better off buying another 15-22. Oh well. Still, I am cautiously optimistic that the gunsmith can help me.

If he is able to get the part numbers, I will be sure to pass them on to you guys.