Semi-auto Bren piercing primers - any solutions?

[Cetme24]

That’s primer flow back into your firing pin hole. I built a 3006 Italian bren and ran into the same issue using the firing pins.com pin. I had to make a longer one that sat just shy of the face of the bolt. Continued firing will damage your bolt fade and firing pin hole as well as the pin.

I forget how to load photos or I would post a few