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  1. #1
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    Geissele Rails and CMT upper compatability

    Anyone mate the two? Iím looking into the MK8 or MK14 for my next build. Iíve got the upper, and it looks similar enough to my forged upper, but Iím wondering if anyone has tried the combination of the two.
    Thanks

  2. #2
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    I ran a MK14 on a FCD/CMT upper and had no problems.
    Name:  IMG_0452.jpg
Views: 126
Size:  702.6 KB
    Last edited by DISCOM; 19 February 2019 at 05:22.
    ďFast is fine, But accuracy is final.Ē Wyatt Earp

  3. #3
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    Perfect. Thanks for the pic DISCOM. Now to make the final disunion between the MK8 or MK14.

  4. #4
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    I have shot both and still own both. IMO MK14 is the way to go but, that's your call and a tough decision.
    ďFast is fine, But accuracy is final.Ē Wyatt Earp

  5. #5
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    Matches up to that NTD lower better than I thought it would.

  6. #6
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    Quote Originally Posted by DISCOM View Post
    I ran a MK14 on a FCD/CMT upper and had no problems.
    Name:  IMG_0452.jpg
Views: 126
Size:  702.6 KB
    Pic looks stretched but wow that's a nice looking build.
    -One Nation, Under God

    -"The bad news is time flies. The good news is you're the pilot." ~ Michael Althsuler

  7. #7
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    Quote Originally Posted by UWone77 View Post
    Matches up to that NTD lower better than I thought it would.
    The lines match on both sides. It makes you wonder if CMT was milling for NTD or vise versa.
    ďFast is fine, But accuracy is final.Ē Wyatt Earp

  8. #8
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    Quote Originally Posted by DISCOM View Post
    I ran a MK14 on a FCD/CMT upper and had no problems.
    Name:  IMG_0452.jpg
Views: 126
Size:  702.6 KB
    Those three look great together. Very nice.
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  9. #9
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    Can't go wrong with a mk4/mk8 or mk13/mk14 on the FDC/CMT. Not as big a fan of the newer mk16 rails. Not sure if a mk16 would even fit the FDC/CMT upper given the alignment tabs. Would be curious to hear if anyone has tried to fit a Mk16 rail on FDC/CMT upper?

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