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Old 03-16-2017, 07:13 PM
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Mark IV 22/45 LITE firing pin



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I order a TK Fire Starter Titanium firing pin for my Mark IV LITE, It was late at night I was tired from working, I took the Mark IV LITE firing pin out, and open the package and I got mix up which one is the new TK Fire Starter firing pin, they both look different, one with 2 slot hole and thinner and another one is thicker and with 1 slot hole

Can you guys took a picture of the Mark IV LITE firing pin and post it here.

Thanks.
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  #2  
Old 03-16-2017, 07:38 PM
C6Vern
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Photo of Tandomkross Firing pin:

https://www.tandemkross.com/Fire-Sta...KIV_p_151.html

Your mark IV owners manual has a diagram on page 34.
If that's not enough, you might look at a youTube upgrade video to see the stock pin.

That first link should be enough ...
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Old 03-16-2017, 07:54 PM
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Quote:
Originally Posted by C6Vern View Post
Photo of Tandomkross Firing pin:

https://www.tandemkross.com/Fire-Sta...KIV_p_151.html

Your mark IV owners manual has a diagram on page 34.
If that's not enough, you might look at a youTube upgrade video to see the stock pin.

That first link should be enough ...
Thanks. I did look at TK site, and I look at the owner manual page 34, parts 11, I thought the TK Firing pin is thinner and narrow and lighter, my Mark II and Mark III hunter are different than Mark IV, and also I think the Mark IV is now using Titanium firing pin.
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Old 03-16-2017, 08:32 PM
C6Vern
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That's cool. I think bottom line - Tandemkross pin has one hole and the stock pin has two.

Let us know how it works ... I may buy one of these firing pins in the future.
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Old 03-16-2017, 09:02 PM
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Use a magnet. The Titanium firing pin won't be at all magnetic. I don't think any Ruger OEM firing pin is anything but steel.
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Old 03-17-2017, 12:56 AM
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Quote:
Originally Posted by C6Vern View Post
That's cool. I think bottom line - Tandemkross pin has one hole and the stock pin has two.

Let us know how it works ... I may buy one of these firing pins in the future.


The left is with 1 notch hole, and the right is with 2 notch hole firing pin. I still don't know which one is TK firing pin.

The left shell got a wider foot print, and the right got a nerrow foot print and deeper.

Sent from my SM-N910V using Tapatalk
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Old 03-17-2017, 01:59 AM
polarys425
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Here is a picture of the factory firing pin in my MKIV 22/45 Lite.

Last edited by polarys425; 05-11-2017 at 11:26 PM.
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Old 03-17-2017, 03:04 AM
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Thanks 425, It's vary nice of you. Good people like you make me come back to RFC after all those year's . Karma will go to people like you.

Thanks again.

Last edited by cmichael; 03-17-2017 at 03:32 AM.
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  #9  
Old 04-22-2017, 11:32 PM
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I recently replaced the firing pin on my old Mark I. At first I bought the TK Firestarter pin but didn't like the shallow hits on the edge of the case which caused some case distortion (which you can see in your photo of the case on the left). I then heard about the new Ruger OEM pin that is supplied with the new Mark IV and purchased one of those for about $5. With it, I got deeper and better placed strikes (like in your case on the right). IMO, the new Ruger OEM firing pin has the better ignition footprint. I've also heard reports of the Titanium pins being brittle and suffering damage from the hardened hammer strikes.
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  #10  
Old 04-23-2017, 12:00 AM
MarkB1
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Quote:
Originally Posted by polarys425 View Post
Here is a picture of the factory firing pin in my MKIV 22/45 Lite.
Looks just like my MK IV Hunter firing pin. I do believe that the same firing pin is used in the 10-22 rifle series. I wonder if the newer 10-22s have the new design pin? My nre 22/45 Tactical should be ready for pickup on Tuesday. Right now, it's halfway here.

Last edited by MarkB1; 04-23-2017 at 12:02 AM.
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  #11  
Old 04-23-2017, 10:47 AM
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Quote:
Originally Posted by MarkB1 View Post
Looks just like my MK IV Hunter firing pin. I do believe that the same firing pin is used in the 10-22 rifle series.
Ruger 10/22 firing pin:



Part Number 60008

Ruger hasn't yet listed Mark IV parts on the web site or given part numbers in the manuals.
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  #12  
Old 04-23-2017, 11:31 AM
MarkB1
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SGW Gunsmith posted this on another forum. It shows the difference between the old and new firing pins for the MK series.

http://s915.photobucket.com/user/SGW...%2017.jpg.html

Edit: I checked. The 10-22 firing pin appears longer and has a different part number than the MK IV firing pin. They are NOT interchangable. I believe.

Last edited by MarkB1; 04-23-2017 at 11:47 AM.
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