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Thread: BCM 14.5” Midlength - Ideal buffer/spring combo

  1. #1
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    BCM 14.5” Midlength - Ideal buffer/spring combo

    I just ordered a BCM 14.5” EHL mid-length upper, and was curious what the ideal buffer and spring weight combo might be. I plan to start with an H buffer and Sprinco blue, only because that’s what I’ve been running with my BCM 16” mid-length upper that I’m replacing with this new upper.

  2. #2
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    I have found my 14.5 BCM ELW midlength gas to be extremely finicky regards to buffer weight and spring. Currently find a 1/2 moon Colt carrier and standard carbine buffer and spring the best for mine.

    I had started with an FA BCG & H1 buffer plus Tubb flatwire Silicon spring, that was too much!
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  3. #3
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    My wife runs a Geissele Super 42 with their standard H buffer in her BCM BFH 14.5 LW midlength (please note it is not the ELW version), and it is super smooth. She tried colt spring with H buffer and the Blue Sprinco with both H and H2 buffers, and she prefers the Geissele.

  4. #4
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    Quote Originally Posted by morpheus562 View Post
    My wife runs a Geissele Super 42 with their standard H buffer in her BCM BFH 14.5 LW midlength (please note it is not the ELW version), and it is super smooth. She tried colt spring with H buffer and the Blue Sprinco with both H and H2 buffers, and she prefers the Geissele.
    Were there any reliability issues with the blue sprinco and H or H2 buffer? How does the Super 42 compare to the blue sprinco in terms of power?

  5. #5
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    Zero reliability issues with any setup. She just had a personal preference to the Geissele.

    She took a rifle course with the BCM in June where she put 2k rounds through the rifle in 3 days with zero malfunctions.
    Last edited by morpheus562; 12-02-18 at 14:18.

  6. #6
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    BCM ships both 14 and 16" middie rifles with H buffers if that means anything.

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