BKS613, Welcome to the forum! You have a nice luger that I am sure you will enjoy. You got a decent deal on it, too.
G.T. is a member that can repair that mag. He has fixed one of mine.
Spend some time reading the FAQs. It is more of a basic Luger tutorial than it is a FAQ.
Post often there is a wealth of Luger info on this forum: great folks here.