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Thread: Preventative Maintenance Schedule

  1. #11
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    You know what I got out of all this?
    I do NOT want my penis to fall off, so rather than try to find the shit that IG uses, I will buy a new gas tube once in a while. I am kinda fond of my junk..... Damn IG.... I get the heebee-jeebees just imagining that!
    I save money using AMSOIL full synthetic lubricants. Do you?
    http://www.lubedealer.com/DiscountPowerParts/home.aspx

  2. #12
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    The gas tubes get clogged from a unburnt powder and carbon build up. This is addressed on page 152 of TM 9-1005-319-23&P under the section short recoil. Specifically the chemical is carbon cleaning compound. Essentially when your gas system starts to fail you can isolate the issue by doing the following.

    1. Ensure that the bolt carrier key is tightened and staked and that the lips of the carrier key are not damaged.

    2. With a clean BCG inspect and test gas rings.

    3. Ensure that gas tube roll pin is in place.

    4. Check for a broken or damaged gas tube.

    When all of those steps fail they then recommend soaking the barrel assy. in carbon removing compound as well. If the system still malfucntions then the barrel is replaced. What they don't address is gas port erosion which will also cause your weapons to malfunction. So you may not think or believe what I said about the gas tube but it is a fact of life. I have a few hours of experience with the M16 FOW and I have seen quite a bit.

    Quote Originally Posted by dcmdon View Post
    A couple of thoughts.

    My maintenance schedule with an AR would vary depending on its use.

    A plinker would get the least maintenance.
    A competitive gun would get more.
    A gun I will bet my life on will get the most aggresive maintenance.

    One of the things that we seek to avoid is catastrophic failure of a part that renders the gun inoperable.

    It seems to me that a gas tube will not fail that way. If it gets clogged (and I've never heard of that) it would fail gradually. A failure to extract here. Then maybe failing to lock back on an empty mag.

    The bottom line here is that if a gas tube clogged, it would be gradual. It wouldn't just suddenly stop cycling the action. As such, I don't think there is any need to change it on time.

    Here is a question to some of the really experienced guys out there. have you ever seen a clogged gas tube? It would seem to me that the tube would build up some crap, but then reach an equilibrium at which point the 10,000 psi of combustion gas would remove anything as quickly as it accumulated.

    Don



    Owner/Instructor at Semper Paratus Arms

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  3. #13
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    For anyone that is interested here is the NSN and a link to the source for said Carbon Removing Compound. NSN 6850-00-965-2332.

    http://www.fastenal.com/web/products...0680532&ucst=t



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

    M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141

    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

  4. #14
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    I wasn't challenging you. I was looking for some real experience. So its real.

  5. #15
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    Sorry if I was confrontational, I was just trying to lay it out. FWIW- I just replace the gas tube. It's cheaper and less headache in the long run than using that chemical crap. Some shops may opt for using it on the barrels, but in the places where I was we didn't. I might also add that you also need a Hawkeye Bore Scope to see if your gas port is eroded and they aren't cheap.

    Quote Originally Posted by dcmdon View Post
    I wasn't challenging you. I was looking for some real experience. So its real.
    Last edited by Iraqgunz; 06-09-09 at 13:32.



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

    M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141

    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

  6. #16
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    If you can, take a wild stab at how many rounds the guns the needed the tube replace had seen.

    5000?
    15,000?

    Thanks,

    Don

    p.s. I ask because while I am not a particularly heavy shooter (4000 rounds/year), I've never had to deal with my gas tube getting dirty. Maybe thats because most guns are over-gassed from the beginning.

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