Firing pin cracked

Alx · 06-09-2014, 08:41 PM

Ithacaartist, IIRC, the firing pin spring does not push back on the rear of the firing pin. The spring pushes forward on it, fitting inside the cup at the back of the pin. The sear bar holds the pin back by engaging the part that sticks out sideways, but the spring always is pushing the pin forwards. That's how a faulty sear can cause chainfire, with nothing to keep the pin from riding with the bolt forward.

06-09-2014, 08:41 PM	#12
Alx User Join Date: Sep 2006 Location: Nashville, Tennessee area Posts: 263 Thanks: 5 Thanked 3 Times in 3 Posts	Ithacaartist, IIRC, the firing pin spring does not push back on the rear of the firing pin. The spring pushes forward on it, fitting inside the cup at the back of the pin. The sear bar holds the pin back by engaging the part that sticks out sideways, but the spring always is pushing the pin forwards. That's how a faulty sear can cause chainfire, with nothing to keep the pin from riding with the bolt forward.