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Thread: Loose gas key

  1. #41
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    Quote Originally Posted by mtdawg169 View Post
    Considering that the TM calls for both, I'd assume it's already been tested.
    I have never seen a reference to applying threadlocker to the carrier key screws in a Tech Manual.

  2. #42
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    Quote Originally Posted by 556Cliff View Post
    I have never seen a reference to applying threadlocker to the carrier key screws in a Tech Manual.
    Well, I just reread it and it looks like you're right. I know I've seen the use of permatex in a manual somewhere, but now I can't remember where I read it.

  3. #43
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    Quote Originally Posted by mtdawg169 View Post
    Well, I just reread it and it looks like you're right. I know I've seen the use of permatex in a manual somewhere, but now I can't remember where I read it.
    I think that was called out for in a Colt TM if my memory is working correctly. Though I also think I remember Iraqgunz saying that he has never seen anything like Permatex on any of the Colt gas keys that he has disassembled.
    Last edited by 556Cliff; 10-16-15 at 13:55.

  4. #44
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    Quote Originally Posted by 556Cliff View Post
    I think that was called out for in a Colt TM if my memory is working correctly. Though I also think I remember Iraqgunz saying that he has never seen anything like Permatex on any of the Colt gas keys that he has disassembled.
    I think you're right. But IG also teaches to apply loctite and stake. Whether it's called for or not, you definitely don't have to worry about them coming loose.

  5. #45
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    Quote Originally Posted by mtdawg169 View Post
    I think you're right. But IG also teaches to apply loctite and stake. Whether it's called for or not, you definitely don't have to worry about them coming loose.
    I have no problem with that method at all. I most definitely prefer to stake my own carrier key screws and I have three carrier key staking tools to prove it, though I would still love to see a threadlocker only test done on a couple of carriers, even if doomed to failure.

  6. #46
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    Quote Originally Posted by 556Cliff View Post
    I think that was called out for in a Colt TM if my memory is working correctly. Though I also think I remember Iraqgunz saying that he has never seen anything like Permatex on any of the Colt gas keys that he has disassembled.
    On my last two factory visits, the ladies installing gas keys are putting a bead of Permatex around the inlet hole in the bolt carrier before setting it in place and torqueing the fasteners.
    Colt's Manufacturing Company Armorer Instructor

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  7. #47
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    Quote Originally Posted by Wayne Dobbs View Post
    On my last two factory visits, the ladies installing gas keys are putting a bead of Permatex around the inlet hole in the bolt carrier before setting it in place and torqueing the fasteners.
    Thank you, that's one Colt specific mystery solved... Now you just need to smuggle us out some pics of their barrel installation machines and their receiver extension installation jig.

  8. #48
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    Quote Originally Posted by 556Cliff View Post
    Thank you, that's one Colt specific mystery solved... Now you just need to smuggle us out some pics of their barrel installation machines and their receiver extension installation jig.
    The barrel's extension (containing locking lug recesses) is torqued onto the barrel via machine to 150 ft-lbs. When this is done, the barrel is just the barrel, without gas port, etc. After this is done, the 6 and 12 o'clock positions are now determined and the port is reamed. And, even as an employee of Colt, I can't go into the factory with cell phone or camera, so no pics.
    Colt's Manufacturing Company Armorer Instructor

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  9. #49
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    Quote Originally Posted by Wayne Dobbs View Post
    The barrel's extension (containing locking lug recesses) is torqued onto the barrel via machine to 150 ft-lbs. When this is done, the barrel is just the barrel, without gas port, etc. After this is done, the 6 and 12 o'clock positions are now determined and the port is reamed. And, even as an employee of Colt, I can't go into the factory with cell phone or camera, so no pics.
    That's a bummer. Colt has been the most top secret manufacturer about their assembly procedures. There has never even been a leaked picture of something as simple as their barrel nut wrench, which they don't even use anymore because they use multi thousand dollar machines to install barrels now.

    Ken Elmore did describe to me the Colt barrel nut wrench once and it sounded like something that they pulled out of the ark of the covenant.

    Sidetrack over I guess.
    Last edited by 556Cliff; 10-17-15 at 11:42.

  10. #50
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    Quote Originally Posted by Iraqgunz View Post
    Maybe. But, I wouldn't expect them to replace a carrier that was purchased 2nd hand with no idea if it was messed with.
    Just so everyone is aware, they will!!! This is why BCM is as awesome as they are.

    Me:

    Hi,

    I recently purchased a used BCM bolt carrier group from a friend. It has around 2000 rounds on it (so I am told). I am curious if I could send it back to you guys to have it inspected before I fire it. How would I do this and how much would it cost?

    Thanks,
    Nick

    BCM:

    Hi Nick,

    2,000 rounds is really not a lot for a milspec bolt. So long as it has been properly maintained, your bolt will provide many years of service. BCM bolt carrier groups also carry a lifetime workmanship warranty. Should you ever have an issue, please contact us so we can rectify it.

    Thanks,

    Bravo Company USA, Inc


    Sent from my iPhone using Tapatalk
    It's better to be thought a fool than to open your mouth and remove all doubt.

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