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Thread: Barrel nut removal help - Lightweight barrel will not stop rotating in vice jaws

  1. #11
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    I'm having a hell of a time with my Colt. The nut does not want to come loose. I've been soaking it with Militec oil but it wont budge.
    Which is better, the freezer or a torch?
    As required: "I work for ITS Tactical as an editor".

  2. #12
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    Quote Originally Posted by CENTCOM_Survivor View Post
    I'm having a hell of a time with my Colt. The nut does not want to come loose. I've been soaking it with Militec oil but it wont budge.
    Which is better, the freezer or a torch?
    Not sure how much effect Militec is going to have. If you can't get Kroil Oil, Liquid Wrench has worked well for me.

    As for freezer or torch - I myself try to be careful with the application of heat, but it can help with loctite. I don't like putting stuff in the freezer, as I get condensation as soon as I take it out - just my 2 cents.

    <Edit:> like gotm4 said, just found some mention of using freezing per this thread:

    https://www.m4carbine.net/showthread.php?t=3864
    Last edited by notorious_ar15; 09-12-10 at 18:52.

  3. #13
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    Many times Colts are insanely tight.
    Freezing works better than heat. Heat just makes the aluminum receiver expand tighter in the steel barrel nut. Aluminum expands faster than steel.
    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

  4. #14
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    Quote Originally Posted by gotm4 View Post
    Many times Colts are insanely tight.
    Freezing works better than heat. Heat just makes the aluminum receiver expand tighter in the steel barrel nut. Aluminum expands faster than steel.
    Thanks I'll try freezing, I already cracked the upper receiver so it cant hurt.
    As required: "I work for ITS Tactical as an editor".

  5. #15
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    Quote Originally Posted by CENTCOM_Survivor View Post
    Thanks I'll try freezing, I already cracked the upper receiver so it cant hurt.
    If that doesn't work you can get Medieval on it cutting off the delta ring assy and using a plumbers pipe wrench to remove the barrel nut. When done you'll need a new barrel nut.
    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

  6. #16
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    You cracked the upper? Damn, that sucks.

    Quote Originally Posted by CENTCOM_Survivor View Post
    Thanks I'll try freezing, I already cracked the upper receiver so it cant hurt.



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  7. #17
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    Quote Originally Posted by Iraqgunz View Post
    You cracked the upper? Damn, that sucks.
    Yeah, I went old school (wood) without a real receiver block and just my luck it cracked at the ejection port. After that I went medieval in the vice but it still wont budge.

    Quote Originally Posted by gotm4 View Post
    If that doesn't work you can get Medieval on it cutting off the delta ring assy and using a plumbers pipe wrench to remove the barrel nut. When done you'll need a new barrel nut.
    I'm going to the VTAC hand guards so I have the new ring assembly/barrel nut. I think my bolt cutters will fit over the delta ring.
    Last edited by CENTCOM_Survivor; 09-12-10 at 20:55.
    As required: "I work for ITS Tactical as an editor".

  8. #18
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    Quote Originally Posted by CENTCOM_Survivor View Post
    Thanks I'll try freezing, I already cracked the upper receiver so it cant hurt.
    wholly shit, man.. well a new receiver is only $90 at bravo.

    get a panther claw!

  9. #19
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    Quote Originally Posted by bkb0000 View Post
    wholly shit, man.. well a new receiver is only $90 at bravo.

    get a panther claw!
    New receiver and panther claw are inbound. I think the Gremlins followed me from my car project, seems stuff always goes wrong there too
    As required: "I work for ITS Tactical as an editor".

  10. #20
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    Just to piggyback on what the other guys have said, I'd only apply heat if you have reason to believe, or reasonable suspicion, that there is locktite involved. If it's a factory Colt then this is unlikely. I also wouldn't proceed with any of this without some kind of purpose-build upper receiver block.

    I had a hell of a time with an LMT nut years ago and after injuring myself and breaking a GI barrel wrench, I put it in the freezer overnight and the next day it popped right off. FWIW, in the case of the LMT I don't think they used any kind of anti-seize and then torqued the hell out of the nut.

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