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Thread: Scuffing on a recoil buffer; Normal or Abnormal?

  1. #1
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    Scuffing on a recoil buffer; Normal or Abnormal?

    I've had the same rifle for over ten years. I have no idea how many rounds I have put through this thing. It's a carbine gas, CMMG with a Carbine weight buffer. I noticed some severe scuffing on the face of the buffer. Is that normal, or, as I have begun to suspect, is my upper potentially out of spec?

    https://www.flickr.com/photos/197724...posted-public/
    https://www.flickr.com/photos/197724...posted-public/
    Last edited by LivingtheHistoryM1; 02-16-23 at 20:54.
    "Success consists of going from failure to failure without loss of enthusiasm." - Winston Churchill.

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  2. #2
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    Looks like you shoot it…

  3. #3
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    Try using a heavier buffer and see if it's reduced. Can you tell us anything more about the rifle it's in? Round count? When you first started noticing it? Full auto?
    “You have made us for yourself, O Lord, and our heart is restless until it rests in you.” -Augustine

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    Edit - 17K and Vicious said it better than I could.

    Andy
    Last edited by AndyLate; 02-17-23 at 07:29.

  5. #5
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    Quote Originally Posted by LivingtheHistoryM1 View Post
    I've had the same rifle for over ten years. I have no idea how many rounds I have put through this thing. It's a carbine gas, CMMG with a Carbine weight buffer. I noticed some severe scuffing on the face of the buffer. Is that normal, or, as I have begun to suspect, is my upper potentially out of spec?

    https://www.flickr.com/photos/197724...posted-public/
    https://www.flickr.com/photos/197724...posted-public/
    Probably just a roughly machined bolt carrier tail. Just lap it yourself with a whetstone and refinish it with some cold blue.
    Forward Ascertainment Group

  6. #6
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    Buffer face chingers are normal. But I'd bump up to an H2. I doubt a CMMG is undergassed. A Carbine weight buffer has no place in a fully gassed gun.
    "What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v

  7. #7
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    I suspect I have under 7 or 8k rounds on this rifle, a whole mix of anything from Wolf to XM193, all on Semi-Auto. I thought that scuffing was normal about six or seven years ago. I have bumped up to an H1, as I know the gun is a bit over gassed. I have not had the chance to compare the recoil or ejection yet. My PhD is taking a lot of my time right now.
    I appreciate the feedback.
    "Success consists of going from failure to failure without loss of enthusiasm." - Winston Churchill.

    https://learningfromhistory.weebly.com/

  8. #8
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    H2 is "standard". So going up to that buffer may make you like your carbine even more.
    "What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v

  9. #9
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    Quote Originally Posted by markm View Post
    H2 is "standard". So going up to that buffer may make you like your carbine even more.
    Yeah I was going to say I'd put an H2 in it..
    Gettin' down innagrass.
    Let's Go Brandon!

  10. #10
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    Quote Originally Posted by titsonritz View Post
    Yeah I was going to say I'd put an H2 in it..
    Listen to this advice and add a fresh Colt carbine spring.

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