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  #1  
Old 09-04-2017, 06:22 PM
bulkhead1
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Broken Firing Pin



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I had a firing pin on my mkiv target break in half and peen the face of the barrel. It happened on a dry fire for a function check after I replaced the trigger disconnected. The firing pin stop was in place. Has anyone ever had that happen? I will call Ruger tomorrow.
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Old 09-04-2017, 06:44 PM
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A new style Ruger FP broke recently in this thread:

https://www.rimfirecentral.com/forums...d.php?t=983865

Out of curiosity - did yours break in the same place as Stew's did? A picture of yours would help to develop a database for this issue. These pins seem to be more brittle than the older style pins, for some reason.
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Old 09-04-2017, 07:11 PM
bulkhead1
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Sorry, I'm not sure how to post pictures, but mine broke in the same place as the picture you referenced. I don't do a lot of dry firing. It is interesting that the firing pin has that extra hole.
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Old 09-04-2017, 07:27 PM
bulkhead1
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Hopefully I attached properlyAttachment 102945

Last edited by bulkhead1; 09-28-2017 at 09:33 PM.
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Old 09-04-2017, 08:36 PM
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I just sent my Mark IV back to Ruger for the same problem. It peened the barrel enough to cause jams on every round. They replaced the barrel and the firing pin along with other parts. Only dry fire I did was when I took the gun apart.
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Old 09-04-2017, 09:01 PM
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Peening of breech

Mine does have some peening but not enough to cause failure to chamber/eject. This failure looks identical to mine.
Stew
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Old 09-04-2017, 10:24 PM
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Az ---the broken firing pin peened the barrel ?


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Old 09-04-2017, 11:10 PM
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I sent back the hole gun so they could test fire it. After the work they said they fired 40 rounds of Federal Auto Match through it. Last time they tested with Blazer.

Frozen: Yes it peened the barrel enough that no new rounds would load without me pushing the bolt forward. Then I needed a knife to pull them out.
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Old 09-04-2017, 11:44 PM
bulkhead1
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Thanks, I believe I am going to have to send mine back too. What kind of turn around time did you have?
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Old 09-04-2017, 11:49 PM
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Four days. Two days shipping and two days at Ruger. It's good to live in Arizona.
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Old 09-05-2017, 11:39 AM
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AZ, Did yours break in the same place and way as these other 2 did?

Seems that Ruger may have overdone the weight reduction on this new design. I think I would be seeking out an old style pin until Ruger figures it out.
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Old 10-05-2017, 12:23 AM
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Quote:
Originally Posted by AzShooter View Post
I sent back the hole gun so they could test fire it. After the work they said they fired 40 rounds of Federal Auto Match through it. Last time they tested with Blazer.

Frozen: Yes it peened the barrel enough that no new rounds would load without me pushing the bolt forward. Then I needed a knife to pull them out.
So did they change the barrel ?
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Old 09-07-2017, 09:12 PM
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Very easy to replace ,, I have a few new ones still from my mark iii laying around ,I will put in my mark iv lite


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  #14  
Old 09-20-2017, 08:47 PM
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I didn't wait till mine broke, I ordered the Volquartsen MK 3 Bolt tune up kit, why send it to Ruger so they can put the same pin back in the gun. They need to get on the ball with the Mark 4, That Rubber plug int the locking block doesn't even last thru a Brick of ammo, once that plug wears out the upper & lower turn into a rattletrap
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Old 09-22-2017, 03:16 PM
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Broken Firing pin

My Mark IV Target had the same issue. I have sent my pistol in to Ruger last week and i haven't had a response yet. Same damage as well. Pistol was rendered unusable.
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