Is there no hardware with the forearm?
With shipping back and forth and about 100 hours to make one, at least for me, no one wants to pay those $$$$.
Best bet would be to find someone with a duplicator if you have the old stock or see if Boyds will do one.Then finish it yourself.
Taking those old SXS's apart to get the stock off takes a little bit of experience.
What would you be willing to pay for work like this,without the checkering? Not saying I would do it.