Rebounding locks ??

[OH Osthaus]

The pins do protrude through the breach face when at rest, the exact same amount left and right.

I will check the fireing pin springs next, to be quite honest I never knew it had some in there. I have not taken it that far apart yet.

I'm guessing the fireing pin goes out pretty far hits the primer then the hammer is held in check and a light spring retracts the pin a few thousandths.
Is this how the system works ?

Yes, I do not believe the firing pins would protrude if the springs were in place and in good shape. Unless the firing pin has broken - I had one the still fired broken, it was the tip not retracting that gave me the clue something was wrong.

This is a DH hammer less model, don't know if they are all the same .

and yes - all grades function alike