Finally completed my quest for a Navy shooter. Got most of a commercial Navy top end (no chamber date but 1917 on front sight); then added my own 1920 commercial frame, breechblock, FP assembly, sear bar, & trigger plate assembly. All went fine except the sear bar spring (aftermarket?) I had wouldn't fit. So my Luger mentor (he's shy so I won't name him!) came to the rescue with an original spring, and I was in business. Took the completed pistol to the range and it went bang! However, the successive bangs were occasionally interrupted by clicks. So I came home and changed sear bars with another Luger and went back to the range. This time the bangs were uninterrupted. The pistol also has a lot of accuracy potential (especially when I eventually am able to add an Odin Navy stock). Anyway, I'm a happy camper having a complete Navy shooter for about $1600. She's not real pretty, but she's an old sailor's new best friend!
Bill