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Thread: I messed up a Colt 14.5" barrel while drilling it for an extended FH

  1. #41
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    Quote Originally Posted by markm View Post
    Why does this always happen to COLT barrels?

    No shit.

    The last **** up I saw was someone that redrilled the taper pin holes on a like new XM177E2 barrel I bought off the internet hoping to score big.

    I wept.
    Last edited by scottryan; 08-20-10 at 21:14.
    "Not every thing on Earth requires an aftermarket upgrade." demigod/markm

  2. #42
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    Hey guys I feel bad enough about this whole thing as it is... The second barrel I did turned out great. Unfortunately it is a no-name 1x9.

    I've emailed ADCO and sent them a pic. Just waiting to hear back.

  3. #43
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    I don't remember where I read it, but someone had sent out a barrel that was drilled for a carbine length gas system and had the hole plugged and re-drilled for a midlength. something like that might be doable with this barrel.

    The other possibility is to deburr the hole, install the muzzle device so it covers the hole and redrill & pin it at another location. Test fire it & see how it works. You lose nothing if it doesn't shoot good and if it does, you've bought yourself time to shop for a replacement barrel.

    Simplest thing is to just deburr & pin it. The pin does not have to come all the way up to the surface inside. As pointed out in earlier posts, and supported by your test firings, the hole won't cause keyholing. Ports in barrels don't
    Last edited by MistWolf; 08-21-10 at 01:40.

  4. #44
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    ADCO was going to be my vote to. I think it will be fine. Hell my Bushmaster 14.5 measures out to be 14.75 so with any luck they can take the threads back a little farther, and crown it.

    I'm about to attach a vortex hider so Ill try and learn from your mistakes.

  5. #45
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    Quote Originally Posted by scottryan View Post
    No shit.

    The last **** up I saw was someone that redrilled the taper pin holes on a like new XM177E2 barrel I bought off the internet hoping to score big.

    I wept.
    There was a guy on ARFcom years back who ruined a Colt barrel by trying to drive the Taper pins out the WRONG Friggin way.

  6. #46
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    Motorwerks,
    I hope something good comes out of my buffoonery! Here is a link I had saved in favorites and forgot about. Maybe it will help others. It is from the other board.
    http://www.ar15.com/forums/topic.html?b=3&f=4&t=391053

    Here is a picture of the damage.

  7. #47
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    I would think that would be pretty easy to correct having ADCO mill it back, re-thread, and attach one of the longer muzzle devices that are available.

    First thoughts would be a Noveske KX3, but I'm sure there are other options. Would an AAC M4 three prong be long enough?
    Last edited by mrbieler; 08-21-10 at 12:56.
    - Jeff

    “Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered. And the process is continuing day by day and minute by minute. History has stopped. Nothing exists except an endless present in which the Party is always right.” ― George Orwell, 1984

  8. #48
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    Hears what I would do. Lock a BCG into it, drop a cleaning rod down the bore, mark it with a sharpie, pull it out and measure from the end of the rod to the sharpie mark. You will at this point know what you have to work with. At this point you will also know how much ADCO has to work with. My Bushmaster measured out at 14.75 So with a Vortex flash hider I'm out to like 16 3/8-ish. With any luck your colt is the same way and they can scrub that off and pin a vortex in house and spare that thing. It would be a shame to see that barrel go to waste.

    EDIT: I just looked at that picture a little closer.... I hope to hell colt builds their 14.5's at 15.
    Last edited by motorwerks; 08-22-10 at 00:50.

  9. #49
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    How long does it take ADCO to respond to email queries? I get they are closed three days out of the week. It has been several days and counting.

  10. #50
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    that sucks maybe give them a call????

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