Robert, welcome if that has not been said. Is the 1918 a later rework and is police sear safety? Males a difference in what you are trying to do/
Yes, the FAQ has info on real vs repro tooks, in addition to the search function of this site:
I have moved this question to New Collectors, as the repairs area seemed out of place
http://forum.lugerforum.com/forumdis...s=&forumid=133
Ed