Long-Barreled AR Build Recommendations?

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  • Mreed911

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    Okay, so I've got my Texas Flag lower coming and since everything is bigger in Texas and I already have paperwork on an SBR (likely to end up 300Blk) as well as a carbine-length flat top, I'd like to build a long barreled .223.

    I've read about 20" barrels and read less about 24". Thoughts on barrel, rifle length gas system and free float handguard? I don't need quad rail but I'm not against it. I want it to be long enough that folks notice the length, but also want to get the shooting and sighting benefits of the longer sight distance, barrel, etc.

    Thoughts?
     

    T-FAST

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    No experience here, but all Ive read has said that anything over 20" on an AR is really only adding weight and not helping that much in regards to ballistics.
     

    Mreed911

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    Ammo availability since I don't reload... but why the recommendation? Tell me why long makes you think of this caliber? Genuinely interested.
     

    azkcr

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    I've got a 26" 308 RRA.
    Not too sure about the 223. I wouldn't go longer than 20-24" though.
    Just my opinion though, no real world experience.
    It would seem to me that a 24" barrel would be more capable than the 223 round can deliver at 600yrds
     

    BuckySWT

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    Ammo availability since I don't reload... but why the recommendation? Tell me why long makes you think of this caliber? Genuinely interested.

    Just made me think of long range.
    6.5 fits that bill.

    I'm seeing this caliber at academy in regular supply.

    Sent from my MB865 using Tapatalk
     

    PhulesAu

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    Which 6.5? Grendal or Creedmoor? because CM will be needing a AR 10 lower. But like you I've been seeing both, I've read that the Hornaday is tested with a 24". I would think if you averaged 4 - 5 tested lengths, you'd be able to find the sweet spot.
     

    Wiliamr

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    A 24" would be fine if you are going to shoot military long range match gun matches. The only advantage is it gives iron sights a longer sight plane . For practical use say just blazing away, no real advantage. I had a 24 " match gun but changed it to a 20", much easier to hold on target at the 200 and 300 yard targets
     

    1slow01Z71

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    Since dont reload stay away from the grendel. Ammo isnt too crazy expensive but can very hard to find at times and you wont get the most out the cartridge without reloading. I went 20" for my long barrel build. 24" is the optimum for 223 but you dont lose too much going 20" and its lot handier. Plus I shoot with a can 100% of the time and didnt want a 32" barreled AR. Make sure to go with a stout upper receiver like a vltor mur to keep down on flex. With my handloads I can keep 10 shots under 1" with my WOA barrel.
     
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