G&R Tactical

View Poll Results: Barrel length?

93. You may not vote on this poll
  • 11.5"

    24 25.81%
  • 14.5"

    49 52.69%
  • Other

    20 21.51%
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Results 91 to 95 of 95

Thread: 11.5" or 14.5" SR-15? First AR

  1. #91
    Join Date
    Jan 2011
    S.E. PA
    Feedback Score
    Quote Originally Posted by oldbrowndog View Post
    I would 100% agree with this. The bigger point of my post was get what you want the first time, even if you have to wait and save. I drooled over KACs when shopping for my first AR, but they were over my immediately-available price range. Being patient and saving up would've saved me a ton of money over time.
    I agree and have always followed that rule myself. You also seem to have understood needs vs wants. The OP seems new to serious ARs so I’m hoping he understands that too.

    Not sure he had the KAC Lower when the thread started so now that he does might as well continue.
    "A flute without holes, is not a flute. A donut without a hole, is a Danish." - Ty Webb

  2. #92
    Join Date
    Aug 2010
    Metairie, LA
    Feedback Score
    6 (100%)
    Op, I bought a complete SR-15, shot it while I was waiting on the tax stamp for the lower. Once that came in six months or so later, I sold the upper and purchased my 12.5” upper through the EE. It’s a Vltor MUR with a KAC URX quad rail and stainless Noveske barrel. It’s a tank, but runs reliable and shoots super smooth. I would have swapped the rail years ago, but Knights uses a proprietary barrel nut AND wrench. The wrench cost over $100, so I decided it was “stuck” to the upper receiver! . I’m glad I kept it because I’ve determined I prefer the quad rail feel over the slimmer, flat tubular rails. I recently sold a BCM KMR off my 10.5” and replaced that with a Centurion quad rail. Noticeably heavier than the KMR, but shoots so much better with the little bit of added weight.

    I’d suggest a Vltor MUR upper for your KAC lower. The fit is tight. The lines of the MUR look really good (to me) and it’s a quality, “thick-walled” forged piece to compliment your KAC lower. I believe there’s one for sale on the EE. You should buy it before I do!

    Tuning was explained by another poster. SBR’s can be unreliable at first. I swapped the buffer spring and bought several different buffer weights to find the combo that cycled reliably and gave me the feedback I was looking for. I assume it’s mostly driven by the amount of gas coming from your gas block. Adjustable gas blocks are one way to address that issue. They cost more and reviews are pretty mixed. Neither of my SBR’s use adjustable blocks and both run fine suppressed or unsuppressed.

    Again, congrats on your purchase and good luck with your build!
    Here in America we are descended in spirit from revolutionists and rebels - men and women who dare to dissent from accepted doctrine. ~Dwight D. Eisenhower, address, Columbia University, 31 May 1954

  3. #93
    Join Date
    Apr 2007
    Feedback Score
    26 (100%)
    The only thing you will need to "tune" with a KAC upper on a KAC lower is to install the included buffer.
    All others are suspect.
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company

    Director of Training

    FB@ Facebook.com/F2SConsultingLLC
    As accurate as needed, as fast as possible, as many times as it takes.

  4. #94
    Join Date
    Feb 2014
    Feedback Score
    My first was a 14.5" ar. Still have it, great all around rifle

  5. #95
    Join Date
    Apr 2014
    Feedback Score
    3 (100%)
    14.5. I’ve done a few and keep going back to 14.5.

    Sent from my iPhone using Tapatalk

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