lunker- congrats! have a little one on the way myself.
and...
Another Navesink member, live up behind stone church/ a&p. Great to know there are a lot more members in Middletown than I thought.
Just bought SR9C, stil waiting for NICS to come back though. Came with one 10 round mag and one 17 round pinned to 15. 17 round mag is same mag as full size SR9 i believe, so yes you should be able to get 15 round mag.