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XM193 - why do the cases look so bad?

Discussion in 'Caliber Corner' started by cowboy1964, Feb 22, 2011.

  1. cowboy1964

    cowboy1964

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    Most "M193"-type 5.56 ammo I seen online look like the below. What's the deal with the case? I assume it's just because of a shortcut made in the production process and doesn't harm function but it sure looks bad.


    [​IMG]
     
    Last edited: Feb 22, 2011
  2. Merkavaboy

    Merkavaboy Code-7A KUZ769

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    We don't know what your ammo looks like. Any way to post some pics of it?
     

  3. rwrjr

    rwrjr

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    That's what the case is supposed to look like. The cases are annealed, that is heat treated. Some vendors of commercial ammo polish the cases afterward to make them nice and pretty. The polishing just adds unnecessary time and cost to production.

    Lake City and others skip the polishing step for military ammo.
     
    Last edited: Feb 22, 2011
  4. RyanNREMTP

    RyanNREMTP Inactive/Banned

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    I think he's referring to the discoloration of the case near the neck. I have no idea why it discolors like that but I have some other ammo (5.56) that is like that as well. I don't have any issue with it.

    Besides it hides in a magazine so no one is looking.
     
  5. Zombie Steve

    Zombie Steve Decap Pin Killa

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    Yep. Annealing. Totally cosmetic.
     
  6. Gunnut 45/454

    Gunnut 45/454

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    Yep that what they are supposed to look like- Obviously you shoot alot of Commercial brass(.223)! They don't anneal there brass! Thats 5.56mm made to Mil spec's:supergrin:
     
  7. rwrjr

    rwrjr

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    I thought they did anneal but polished afterward. I could be wrong though.
     
  8. TheGrimReaper

    TheGrimReaper

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