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Thread: 14.5 Inch Mid Length ARs.....Ammo Sensitive?

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    14.5 Inch Mid Length ARs.....Ammo Sensitive?

    Gentlemen,

    I realize that this might have been covered before so I tried to search for a similar thread. However, I was not able to find anything directly on point after my brief search.

    My question is whether 14.5 inch mid length ARs are ammo sensitive. That is, would I be able to run full 5.56 NATO ammo as well as quality .223 ammo (PMC and Federal)?

    Thank you.

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    Mine has not been ammo sensitive at all. I have a DD 14.5 midlength, with H buffer, that has been 100% with everything from M855 to Tula.

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    Quote Originally Posted by weg111 View Post
    Gentlemen,

    I realize that this might have been covered before so I tried to search for a similar thread. However, I was not able to find anything directly on point after my brief search.

    My question is whether 14.5 inch mid length ARs are ammo sensitive. That is, would I be able to run full 5.56 NATO ammo as well as quality .223 ammo (PMC and Federal)?

    Thank you.
    First problem with the middy gas system: No standard gas port size

    Second problem: Dwell time is less with a 14.5" barrel

    So to answer your question, yes SOME middy gassed 14.5" barrels CAN be ammo sensitive. I am of the opinion that many companies over gas these barrels so that they don't have any short stroking problems. Then you are basically shooting a carbine gas system (which would actually be softer shooting).

    Personally, I would go with a 16" Middy gassed barrel (from BCM, Noveske, etc) and so that I could shoot whatever ammo I want.



    C4
    Last edited by C4IGrant; 11-02-12 at 21:52.

  4. #4
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    I just got back from shooting a brand new BCM 14.5" mid that i just got together last friday. I shot about 100 rnds of mixed ammo, fed .223 55gr/62gr reloads/win5.56 and didn't have any malfunctions.. Using a carbine buffer as well, only because it came with the daniel defense tube. I plan on buying an H buffer, because its what bcm recommends for NATO stuff.

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    Biggest issue I have seen is people trying to run 14.5" Middys with H1-H3 buffers and weak ammo.

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    I haven't had any issues with my Noveske 14.5. It has happily eaten every brand of .223 and 5.56mm I have fed it.

  7. #7
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    Quote Originally Posted by weg111 View Post

    My question is whether 14.5 inch mid length ARs are ammo sensitive.
    From what company? Its like asking if sports cars are reliable...

    No concern at all with any of mine, but I don't have any "budget" or junk carbines either.
    Stick


    Board policy mandates I state that I shoot for BCM. I have also done work for 200 or so manufacturers within the firearm community. I am prior service, a full time LEO, firearm instructor, armorer, TL, martial arts instructor, and all around good guy.

    I also shoot and write for various publications. Let me know if you know cool secrets or have toys worthy of an article...


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  8. #8
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    Grant and Stickman nailed it. It depends on the company. If you get a reputable barrel then you are good to go.



    Owner/Instructor at Semper Paratus Arms

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    I've run over 5K rounds of Hornady TAP .223 in 75 gr. and 55 gr. as well as Federal M855 and M193 through my Centurion Arms C4 14.5" middy with no issues whatsoever running an H2 buffer and blue Sprinco spring.

    The Sandbox, 2001-2006
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    I have 2,,14.5 Inch BBL/setups and both have run great !!! One is a Daniel Defense 14.5 Government Profile BBL and the other is a Centurion LTW BBL,,both run Low Pro Gas blocks with battle Comps !! I have thousands of Rd's down the DD BBL and it has been near perfect,,any issue was mag related ! I have shot reloads,,,,Wolf/Tula Golden Tiger,() XM193 & just about every other type/kind of 223/556 ammo and it has been great !!! I only have about 1200 rds down the Centurion BBL,,put it together and the Golden Tiger would Not lock the bolt back for the 1st 100rds or so,,but after 150/200 rds it started running great with that and every other type I have put through it,,great setups in my eyes !! Also my DD has a Standard buffer. My centurion setup has a A1 Buffer & Stock !!

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