Tuning for Reliability

[kurusu]

Originally Posted by Sieger

Hi,

The first usual failure point would be where the rear of the toggle link (holding the firing pin retainer) slaps the rear frame abutment. Is this the failure you are describing?

This slapping, eventually, causes these parts to fail, wounding the Luger, permanently.
Sieger

No, the cracks developed around the operating knobs. Caused, I believe, to the impact of the knobs on the ramp that breakes the toggle joint.
Very similar to this exemple:
cracked.JPG

Originally Posted by Sieger

With hot ammo, you can actually feel this slap in the web of your hand, as it can be very painful.

Sieger

Disagreable yes. But painful only if you let it slide up on your hand from the previous shot.
Or with people with smaller hands that in order to reach the trigger cannot set it perfectly in the hand web.