Bursa Thunder Light/No Primer Strike

[robert101]

Gun has fired fine in the past without any issues. Now light to no firing pin impression. I have removed the firing pin and spring and cleaned the chamber completely. The firing pin will not protrude from the breech face at all when assembled. It will move freely when semi-disassembled and pushed forward. I know the likely problem is that it is not assembled correctly. Any words of wisdom on the problem or potential gun smith in the local area of South Orange County? Thank you.
Robert

[SkyHawk]

Do these have a firing pin safety?

EDIT: Yes they do, in a couple of forms.

Remove the slide, press the firing pin safety into the slide and then try to see if the firing pin protrudes from the breech face when you press the firing pin from the rear.

Also make sure the tip of the firing pin is not broken.

And tell us what you have done, did you detail strip the slide and/or frame? Perhaps you did not get the firing pin stop (#26) oriented correctly? It seems that part #62 in the frame is likely the firing pin safety depressor, make sure it is installed and oriented correctly.

[robert101]

Thank you so much for the diagram and response. The answers to your questions are as follows:

1. Yes I've completely disassembled the slide by removing the decocking lever and removal of the firing pin and slide stop. Cleaned the channel.
2. The firing pin will move freely in the firing pin channel without the slide stop in place.

It is only on complete reassembly of the slide stop that the firing pin will not move properly in the channel. I know this points to a misaligned firing pin and slide stop.

I've watched UTube videos of the assembly and believe I've installed them correctly - but apparently not. I think this is where you were going with your questions. I'm at a loss for identifying the problem with the alignment. It doesn't seem difficult but I'm missing something in the process.

In the diagram you provided it shows the slide stop indentation facing forward. All videos shows the indentation facing towards the firing pin. That is how I reinstalled the slide stop - not like the diagram.

I've completely disassembled and reassembled 1911s and a few other guns and not had this type of problem. I'm no gunsmith but this one is fooling me.

Thank you again for trying to help.

[robert101]

Sorry when I stated slide stop I meant to say firing pin stop.

[SkyHawk]

Which style of firing pin stop do you have, #1 or #2?

[robert101]

SkyHawk,
I have the #2 set up. thank you.

[SkyHawk]

SkyHawk,
I have the #2 set up. thank you.

Ok so be sure the flat spot in the firing pin is pointing down toward the bottom of the slide, and the notch in the firing pin stop is pointing left or to the inside of the slide. Exactly as in the drawing.

This video shows it

https://www.youtube.com/watch?v=EmwhXJDOja0&start=385&end=489

[robert101]

That is exactly the video I used to align the two parts. Thank you for trying.

[grim1U]

Check to make sure the firing pin head has not mushroomed. I have seen a few G43 with exact same problem and when I tore it down the firing pin head had "mushroomed" at the tip.

Put a new firing pin in it and never had a problem again. Sometimes heat treatment process slips pass qc.

Just a thought.

[SkyHawk]

That is exactly the video I used to align the two parts. Thank you for trying.

When you have the slide off the gun, are you able to depress the firing pin stop, hold it depressed and then push the firing pin past the breech face?

[robert101]

Yes, without the Firing Pin Installed I am able to push the firing pin into a primer strike posture and it does protrude from the breech face. It is when I install the Firing Pin Stop that it no longer protrudes from the breech face. I've checked and double checked the alignment of the Firing Pin and its stop but still get the same result.

Thank you all for the replies.

[SkyHawk]

Yes, without the Firing Pin Installed I am able to push the firing pin into a primer strike posture and it does protrude from the breech face.

Got it.

But we need to know if you can PUSH the firing pin stop in (while it is installed) and then can you push the firing pin past the breech face while holding the firing pin stop in.

If you cannot, then clearly the firing pin stop is a problem. Perhaps the spring is not seating correctly or it is the wrong spring, or the orientation of the parts is not correct.

However if you can push the firing pin past the breech face while holding in the firing pin stop, then we need to look at the firing pin stop depressor in the frame.

So this test must be done to continue the troubleshooting.

1) Push in the firing pin stop and hold it in
2) See if you can push the firing pin past the breech face

[kenl]

If the slide passes Skyhawk's test, you may want to look at the auto safety (#62) to make sure it's moving up when the trigger is pulled. That pushes the firing pin block up. Does it look worn out?

Also look at the mag safety (42) to make sure it works.

[robert101]

ShyHawk,
I followed your suggestion and yes it all works with the slide off. Pushing the Firing Pin Stop, the Firing Pin will move freely and protrude from the breech face. Brilliant. The parts don't look worn and the Firing Pin does not look mushroomed. I'll load a primer in a case and test it in the garage. This should work without going to the range. If is does I owe you a ton of gratitude.

Thank you all for replying. I'll try it later tonight. Fingers crossed for good luck.

[robert101]

It worked flawlessly 3 times. Thank you so much for the advice. Another success story.