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Thread: Optimal 9mm AR barrel length?

  1. #31
    FaxonNathan Guest
    Quote Originally Posted by JRHorne View Post
    Faxon makes a 4.5" now and they have a 9mm proprietary BCG as well.
    Just to clarify - its not proprietary to our barrel. It should work with any barrel and lower out there!

  2. #32
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    I have a 5.5 AR-9. I have thought about adding an 7.5 or a 8 inch.

  3. #33
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    Quote Originally Posted by FaxonNathan View Post
    Just to clarify - its not proprietary to our barrel. It should work with any barrel and lower out there!
    Yea I said proprietary and the correct word would have been "dedicated" 9mm BCG. Hoping to build one using both of those products from you all soon!

  4. #34
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    5" is what I found to be the optimal length. I like the 5" barrel a lot.

  5. #35
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    Quote Originally Posted by m4fun View Post
    I fire a lot of suppressed 9mm - been making my own ammo for quite a while now - 147gr and 4.8gr Unique powder. More or less tailored for me to works well suppressed barrels up to 10.5"
    Gawd that must be a 'dirty' load in blowback operation!

    I LOVE Unique for reloading reduced 44 Mag loads to 44 Special level - awesome at bowling pin (big pin) shoots - even awesome for reduced rifle loads using cast boolits - but ahhh so dirty!

  6. #36
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    Quote Originally Posted by samuelcruz View Post
    5" is what I found to be the optimal length. I like the 5" barrel a lot.
    Can you expand on this? Why 5"?
    Last edited by Clint; 08-01-17 at 16:07.
    Black River Tactical
    BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
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  7. #37
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    I like 5" as well. Most people with an AR9 want it because they want to suppress it. 5" gives solid ballistics and any longer just makes it longer

    Sent from my SM-N910V using Tapatalk

  8. #38
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    4.5" for suppressed. If not suppressed, then the 5.5" allows you to use a flash can with fore ends in the 7" range and have part of the can sticking out which is more aesthetically pleasing to me. The 8.5" allows you to add a brake with fore ends in the 9" range. Anything longer than 8.5" kinda defeats the SBR benefits on a 9mm. Also, the Faxon barrels are very nice. Most other 9mm barrels are of the gov't style thicker heavier barrels.

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