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Thread: Knight's Armament SR-15 E3 Legacy 16" & SR-15 E3 CQB SBR 11.5" malfunction suppressed

  1. #101
    Join Date
    Jul 2011
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    Texas
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    E-man, have you seen this thread?
    https://www.m4carbine.net/showthread...=118010&page=3
    The insertable gas port mentioned there might have helped out more than the A5.
    At least if it had been available at the time.
    Last edited by nanners83; 12-08-12 at 18:22.

  2. #102
    Join Date
    Oct 2010
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    Tucson, AZ
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    Quote Originally Posted by mtdawg169 View Post
    Please define "picky" regarding your 16" upper. What ammo, buffer setup or any other factors you changed compared to the factory recommended configuration?
    Early small port.

    Generally ammo that shot well unsuppressed wouldn't shoot well suppressed, and visa versa. I danced around with different Springco units and buffer weights but couldn't get 100% reliability. We did put the upper on a Spikes lower with the A5 one day that Vuurwapen had and it ran good.

    PMC XTAC 5.56 is what I used most during that period last year. XM193 does better, but interestingly Hornady steel 233 75 gr is most reliable.

  3. #103
    Join Date
    May 2009
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    Quote Originally Posted by nanners83 View Post
    E-man, have you seen this thread?
    https://www.m4carbine.net/showthread...=118010&page=3
    The insertable gas port mentioned there might have helped out more than the A5.
    At least if it had been available at the time.
    Interesting... I'd like to see some pics

  4. #104
    Join Date
    Aug 2011
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    I would like to personally thank Jack and Kevin for their help with my sr-15 bolt. Upon inspection, they replaced the bolt and shipped my bcg back to me. I really appreciate the extra effort

  5. #105
    Join Date
    Mar 2008
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    Question

    Quote Originally Posted by gabuzz12 View Post
    I would like to personally thank Jack and Kevin for their help with my sr-15 bolt. Upon inspection, they replaced the bolt and shipped my bcg back to me. I really appreciate the extra effort
    I thought these bolts were rated to 20,000 rounds. What was the root cause of the problem?

  6. #106
    Join Date
    Apr 2007
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    Quote Originally Posted by 9mmkungfu View Post
    I thought these bolts were rated to 20,000 rounds. What was the root cause of the problem?
    The bolt was not worn out or broken, there was a slight manufacturing defect that was identified.
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company
    jleuba@knightarmco.com

  7. #107
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    Thumbs up

    Quote Originally Posted by Failure2Stop View Post
    The bolt was not worn out or broken, there was a slight manufacturing defect that was identified.
    Awesome. Thanks for the update!

  8. #108
    Join Date
    Apr 2009
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    Quote Originally Posted by gabuzz12 View Post
    I would like to personally thank Jack and Kevin for their help with my sr-15 bolt. Upon inspection, they replaced the bolt and shipped my bcg back to me. I really appreciate the extra effort
    As per usual. KAC and the boyz will get you squared-away.

    I wager that your bolt would still have gone the same distance as an unblemished bolt as the front of the (already strengthened) bolt lugs is not a common failure point. Either way, you're set now.

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