Swapping barrel on AR-15?

This is a discussion on Swapping barrel on AR-15? within the Defensive Rifles & Shotgun Discussion forums, part of the Related Topics category; I've recently acquired a 14.5" M4 barrel with threaded compensator to replace the 16" without compensator my AR came with during the ban. I have ...

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Thread: Swapping barrel on AR-15?

  1. #1
    Distinguished Member Array C9H13NO3's Avatar
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    Swapping barrel on AR-15?

    I've recently acquired a 14.5" M4 barrel with threaded compensator to replace the 16" without compensator my AR came with during the ban. I have an armorers tool, plenty of roll pin punches, and a headspace gauge.

    What's the procedure for changing out the barrel? Or even better, anyone know where to download the armorers manual? Thanks.
    -Ryan

    All that is necessary for the triumph of evil is that good men do nothing.

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    Senior Member Array Arkie's Avatar
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    Manual

    How to with photos.

    I hope this helps you.

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    Distinguished Member Array C9H13NO3's Avatar
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    Perfect. Thank you, sir!

    Might be a good time to add a free float, but I don't know if it's worth the price. I'll probably get a railed front sight block though. According to the TM, looks like my barrel will be slightly under 16"...Might have to get a longer compensator?
    -Ryan

    All that is necessary for the triumph of evil is that good men do nothing.

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    VIP Member Array dukalmighty's Avatar
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    You can't put a 14.5" barrel on a gun with a removeable flashhider without a SBR stamp,only way around it is for compensator/flashhider to make the barrel 16" and pinned or welded in place
    "Outside of the killings, Washington has one of the lowest crime rates in the country,"
    --Mayor Marion Barry, Washington , DC .

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    Distinguished Member Array C9H13NO3's Avatar
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    Whoever makes these laws is we-tod-did. I'll pin the compensator or whatever to make it "permanent", and if it's 1/4" under 16...screw it. Nobody's going to be taking out a tape measure to check unless I'm committing a crime with it...which I won't be.
    -Ryan

    All that is necessary for the triumph of evil is that good men do nothing.

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    Ex Member Array Ram Rod's Avatar
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    Quote Originally Posted by dukalmighty View Post
    You can't put a 14.5" barrel on a gun with a removeable flashhider without a SBR stamp,only way around it is for compensator/flashhider to make the barrel 16" and pinned or welded in place
    If it was a muzzle brake instead of a flash hider could you do it?

  8. #7
    Distinguished Member Array C9H13NO3's Avatar
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    muzzle brake and flash hider makes no difference. Your barrel length has to be at least 16" and anything screwed on to make it that long can't be easily removed by hand tools.
    -Ryan

    All that is necessary for the triumph of evil is that good men do nothing.

  9. #8
    VIP Member Array dukalmighty's Avatar
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    Actually the Phantom flashhider I believe is long enough but not legal if you can remove it from the barrel,and the people who make the rules is the GANG AKA BATFE,if some agent/cop checks the gun and it's under 16" it will be confiscated and you will be charged with posession of a SBR without the stamp.Check length of phantom flashhider if it's long enough then have somebody solder the flashhider on but only after you install the barrel on the upper that way you won't leave a piece off that won't slip over the flash hider
    "Outside of the killings, Washington has one of the lowest crime rates in the country,"
    --Mayor Marion Barry, Washington , DC .

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    Member Array laeckcrov's Avatar
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    Quote Originally Posted by C9H13NO3 View Post
    Might be a good time to add a free float, but I don't know if it's worth the price.
    If you can afford it, do it. Free floating makes a world of difference if you shoot a lot, or play at longer ranges. Once I went free-float I knew I'd never go back. I haven't even considered it. OMO though.
    The muzzle end of a .45 pretty much says, "Go Away" in every language.

    Fast is fine, accuracy is final. Learn to be slow in a hurry.

    "I never met a man that had been in a gunfight and wished that he had a smaller gun. Ever."

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    VIP Member Array dukalmighty's Avatar
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    On a 14.5" barrel I don't think the benefits as far as accuracy are there in contrast to free floating a 20 to 24" barrel for matches or varmint hunting
    "Outside of the killings, Washington has one of the lowest crime rates in the country,"
    --Mayor Marion Barry, Washington , DC .

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    Member Array laeckcrov's Avatar
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    Quote Originally Posted by dukalmighty View Post
    On a 14.5" barrel I don't think the benefits as far as accuracy are there in contrast to free floating a 20 to 24" barrel for matches or varmint hunting
    Are they as extreme? No, but when i put a free float on my 16", it tightened up groups for me, getting me down to 3/4" @ 200 yards, granted, I'm not chambered for .223.

    I also feel, though this is an unsubstantiated opinion, that free floating a barrel will help that barrel maintain it's accuracy over time, do to damage to the handguard not affecting the barrel.
    The muzzle end of a .45 pretty much says, "Go Away" in every language.

    Fast is fine, accuracy is final. Learn to be slow in a hurry.

    "I never met a man that had been in a gunfight and wished that he had a smaller gun. Ever."

  13. #12
    Distinguished Member Array C9H13NO3's Avatar
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    I definitely think it could help prevent barrel damage. Only takes 20 pounds of force to slightly bend a barrel permanently.
    -Ryan

    All that is necessary for the triumph of evil is that good men do nothing.

  14. #13
    VIP Member Array dukalmighty's Avatar
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    If your shooting 5 round 3/4" groups at 200 yards you must be one heck of a shot
    "Outside of the killings, Washington has one of the lowest crime rates in the country,"
    --Mayor Marion Barry, Washington , DC .

  15. #14
    Member Array laeckcrov's Avatar
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    Quote Originally Posted by dukalmighty View Post
    If your shooting 5 round 3/4" groups at 200 yards you must be one heck of a shot
    Two of the rules of precision shooting i follow:

    1)Handload

    2) Always spends more on your scope than your rifle.
    The muzzle end of a .45 pretty much says, "Go Away" in every language.

    Fast is fine, accuracy is final. Learn to be slow in a hurry.

    "I never met a man that had been in a gunfight and wished that he had a smaller gun. Ever."

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