Last night, I drug out the digital calipers and measured the old and worn, versus the new and un-used, and here is what I found. The front edge of the worn breechblock had worn away exactly .005" on the bottom front edge, just from rounds sliding up the breech block face from the magazine... So, if you are going to shoot your Luger, a lot, lot! (waaaay more than a little lot!) Sooner or later you're going to have to contend with the weak ejection as a result of this wear... Everything else measured exactly the same.. I'm not sure, but perhaps WW1 B'Blocks are not as hard as WW2 B'Blocks! I dunno? Best to all, til....lat'r.....GT
