1937 Mauser Luger (S/42)

[alanint]

Yes, perhaps "plunger"would have been more appropriate. Make sure all the areas around the bar are clear and clean. One trick is to polish down the very outer edge of the plunger, (facing out of the pistol) so that the "L" bar that connects the trigger to the sear can better ride over it and reset the sear. oil with a very light oil and take it to the range again.