When did Glock change their barrel top engraving?

Discussion in 'General Glocking' started by Giggity-Giggity, May 24, 2016.

  1. Giggity-Giggity

    Giggity-Giggity Giggity-Goo!!!

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    Hi guys. My old Glocks just say the caliber on the top rear of the barrel...but noticed my 2013 G21SF to not only have the caliber, but also "AT", the polygonal symbol and another weird mark-I can't really explain.

    So what gives?
     
  2. Mike-M

    Mike-M

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    "AT" indicates that the barrel was made in Austria.

    I've never seen any "weird mark" so I don't know what you mean.

    In recent years typically there is a caliber indication followed by the dot-polygon on top left, and the Glock trade mark followed by AT on top left.
     
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  3. 1-2man

    1-2man Part Time

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    There is a chrysler emblem on my 43 I'm currently carrying. lol It also says 'Glock'. I've seen some that have the state of Georgia on it as well (I'm sure there are more.) They change quite frequently.
     
  4. BigMoneyGrip

    BigMoneyGrip

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    There is also the 3D mark on some of the AT barrels.
     
  5. Boot Stomper

    Boot Stomper

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  6. Giggity-Giggity

    Giggity-Giggity Giggity-Goo!!!

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  7. Boot Stomper

    Boot Stomper

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  8. Bigpapacolt

    Bigpapacolt

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    Now I have to get up & go look at my Glocks with factory barrels.