Blow back in Mag

Discussion in 'Rifle Discussion' started by Craig O, Feb 29, 2016.

  1. Craig O

    Craig O
    Hillsboro
    Active Member 2016 Volunteer

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    Recently I have noticed a large amount of blow back in my AR 15 magazine. What would cause this ?
     
  2. MountainBear

    MountainBear
    Sweet Home, OR
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    Please describe the issue better. As a gunsmith, when I think blowback, I am generally referring to a specific operating system. What actual symptoms are you experiencing?
     
  3. Certaindeaf

    Certaindeaf
    SE Portland
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    Like unburned powder? Handloads?
     
  4. rick benjamin

    rick benjamin
    USA, Or, Damascus
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    Changed ammunition?
    i found Wolf to be very dirty
     
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  5. Deavis

    Deavis
    Mid Willamette Valley
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    Shooting with a suppressor? They get dirtier quicker.
     
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  6. Craig O

    Craig O
    Hillsboro
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    The best way I can describe it is. When you load a mag with new ammo the ammo is clean and shiny after a few ( 2-3 ) the ammo in the mag is very dull and has a light residue that can be cleaned off with a rag. I could be going nutz and this could be common in the AR platform.
     
  7. Capn Jack

    Capn Jack
    Wet-Stern Washington
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    If this is your first AR, I'm not surprised you are shocked by the amount of carbon blown into the action.:eek: I know, as an ex bolt gun shooter, I was.:eek:
     
  8. Craig O

    Craig O
    Hillsboro
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    Yes it is However I never noticed it before must be a knucklehead moment.
     
  9. tarster

    tarster
    Albany
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    if you are shooting without a suppressor I would be alarmed.. you may need a heavier buffer and or heavier bcg to keep your bolt locked up longer, but if you are shooting suppressed.. Its normal.
     

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