Improve the trigger pull on your shooter Luger by installing trigger stop and slack adjusting screws.
The top adjustment, which is a #2-56 Allen set screw, is designed to take up the small but annoying amount of slack that is present in the linkup between the trigger and the trigger bar. Although it will do so, this screw is NOT designed to adjust sear engagement. If sear engagement is altered by turning this screw in too far, the trigger bar plunger will not reengage the trigger bar when the trigger is released, which will put the gun out of action. The lower #4-40 Allen screw functions as a standard trigger-stop.
By installing these adjustment screws, the total length of trigger travel can be cut from over 1/8" to a hair over 1/16", with practically zero backlash. Once you have the screws set properly, a small drop of Locktite on each will insure less frequent adjustment.
The first of the attached pictures show the adjustment screws mounted in a 1970's era Mauser Luger trigger. The next two pictures show the trigger stop screw mounted in a standard Luger trigger.
In future installments, I will describe how to smooth and lighten your Luger's trigger SAFELY to obtain a smooth 2# trigger pull.