Fritz is definitely right! I tested the Langenhan pistol with 200 rounds. I painted with white enamel a "Witness mark" on slide & screw and then fired 100 rounds. No visible turning of the knurled screw! Another 100 rounds, the pistol was warm, Screw was not lose.
In my country are Hogg & Weeks nicknamed "Grimm brothers"...
In my country are Hogg & Weeks nicknamed "Grimm brothers"...