Mark 23 Primer/Firing Pin Drag
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Thread: Mark 23 Primer/Firing Pin Drag

  1. #1
    HKPRO PREMIUM PARTNER
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    Default Mark 23 Primer/Firing Pin Drag

    It seems my 2020 Mark 23 has some primer drag. Is this normal? Is there anything I can do to fix this?

    It shows up on Fiocchi Range Dynamics 230gr FMJ and Underwood 45 Super 120gr Xtreme Defender.

    Mark 23 Primer/Firing Pin Drag-a2-ae0921-ab5-b-4-d38-a2-f0-64-aca46-f27-b4.jpg

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    Teufelshund Tactical
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    Not normal. Call H&K Repair and have them sort it for you under warranty.
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    SF,

    James

    Heckler and Koch Certified Armorer (Heckler and Koch)
    Heckler and Koch Pistol, Submachine Gun and Rifle Instructor (Singleton International)

    Owner, Teufelshund Tactical

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    AGG
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    And let us know what they find!!!
    Have you tried other ammunition?

    Tony

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    I’ll definitely update here.

    I haven’t tried other ammo, but I feel that the two types I have tried are different enough to conclude that this is a gun issue and not an ammo issue. I’ll try some non-budget, mid weight .45 if I have some time.

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    AGG
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    Quote Originally Posted by Truegrave View Post
    I’ll definitely update here.

    I haven’t tried other ammo, but I feel that the two types I have tried are different enough to conclude that this is a gun issue and not an ammo issue. I’ll try some non-budget, mid weight .45 if I have some time.
    Try quality Federal or Remington (230 grain)--- my guess is ammuntion, secondary to the initial break-in period!!!

    Tony
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    I called HK customer service today and was instructed to email them with a photo of my issue, along with the serial number of the Mark 23.

    I also went to the range today and shot a good variety of ammo (pictured below). All of the casings had the primer/firing pin drag on them. I tried to orient the marks to the 12o'clock position.

    Mark 23 Primer/Firing Pin Drag-45-primer-swipes-01.png
    Last edited by Truegrave; 07-28-2020 at 12:36 AM.

  8. #7
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    Fascinating post! Please do keep up updated. Really solid picture and analysis of the issue.....fwiw
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    AGG
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    Quote Originally Posted by Truegrave View Post
    I called HK customer service today and was instructed to email them with a photo of my issue, along with the serial number of the Mark 23.

    I also went to the range today and shot a good variety of ammo (pictured below). All of the casings had the primer/firing pin drag on them. I tried to orient the marks to the 12o'clock position.

    Click image for larger version. 

Name:	45-primer-swipes-01.png 
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    Excellent tutorial--- keep us updated on the outcome--- very curious!!!

    Tony
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    Interesting... thanks for sharing this.
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  11. #10
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    Never saw "drag" marks like your pics. Of course the first question in taking the gun apart is the firing pin nice and smooth/rounded/straight?
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