Luger part.

[Kirch]

Originally Posted by alanint

This is clearly a manufacturing flaw. The internal cavity was drilled too deep or the flutes are too deep and they managed to meet, creating the hole. Although technically useable, a blown primer will probably end up shearing the firing pin retainer right out of the breach block, damaging either or both.

Greetings!
I also think that this is a defect, resulting in the production. But Deputy original firing pin? or is it a copy? Can you tell from these photos.