Found One

[AJGUNNER]

a

 

[mrs50sls56]

You might check at rimfire central forums. There is a forum for the 10/22 mag. There are some machinists that will make small batches to order. Viable used stock bolts are difficult to find. Volquartsen has been talking about doing a run, but that has been the case for over a year. Good luck with your search.

 

[9x19]

Not mine, and not cheap, but the only one I've seen in a long time.

http://www.gunbroker.com/Auction/ViewItem.aspx?Item=345986398