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way to much fouling

Discussion in 'Rifle Discussion' started by nick1980, Jun 22, 2011.

  1. nick1980

    nick1980 Portland, OR Active Member

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    I purchased a used AR and installed the used upper on a new lower and have been having some issues. The gun jams about every 5 rounds and the ammo cases seem to be very dirty with fouling. I also noticed the gun seems very loud compared to other AR15's. I'm assuming there is so much fouling that things just aren't functioning properly in the upper. The gun was cleaning prior to going shooting so I know it wasn't old fouling left behind.

    Thanks
     
    Garg and (deleted member) like this.
  2. motoman98

    motoman98 Gresham, OR Active Member

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    commercial ammo, military, or reloads?
     
  3. nick1980

    nick1980 Portland, OR Active Member

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    new standard commercial brass ammo sold at WalMart
     
  4. deadeye

    deadeye Albany,OR. Moderator Staff Member

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    Have you checked the gas system= tube and block?
     
  5. NoAim

    NoAim Hillsboro, OR Active Member

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    Might be a big gas leak in the bolt area. Check to see if the carrier key is not loose, the gas tube that protrudes into the receiver is good, and the gas rings on the bolt are in okay shape.
     
  6. jordanvraptor

    jordanvraptor Oregon City, Oregon Well-Known Member

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    Is it a chrome lined barrel? If not, given what you say about lack of cleaning, its chamber and bore might be rusted...?