"Flash Moulding" on Trigger Safety
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  1. #1
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    "Flash Moulding" on Trigger Safety

    If your Glock trigger feels "notchy" intermittently, or if the trigger safety seems to catch on something, I may have the solution for you.

    At a GSFF match last year, I overheard a customer complain about a notchy trigger to the Glock factory Armorer present, who examined the pistol and referred to what he found as "Flash Moulding". He removed the trigger from the gun and filed off a projection on the trigger safety, and the problem was cured. I have since found and fixed this problem on two Glocks owned by friends of mine, so I thought it was time to pass along this information.

    In the attached photo, you will see an arrow on the paper pointing to the trigger safety. Notice that there is a projection on the trigger safety, a little bar that is oriented in the same direction as the arrow. That projection can be the source of problems, and can be safely filed or shaved down. On the guns I have fixed, I used an X-Acto knife or a file, and basically removed the projection completely. Problem solved. You'll see a similar projection at the rear of the trigger safety, but it is not in a position where it can catch on anything, so I've never bothered with it.

    The height of this projection varies, so in some guns it will cause a problem, while in others it is a non-issue. It isn't specific to any generation that I can see, I've found it on both Gen3 and Gen4 triggers. The one in the photo is a Gen3 trigger, by the way.

    Some earlier Glocks have a different projection (a "dot") or none at all.

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    Chris
    Last edited by cohland; 10-22-2014 at 01:09 PM.
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  2. #2
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    Thank you for sharing. Great info!
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    Every one of my Glock triggers has those marks... They must be part of the trigger molding process... Most of mine are very slight, but you can feel the difference with your fingernail... Probably file or sand them off the next time I take one of the triggers out of one of my Glocks...

    Very interesting! Good post Chris...
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    Yeah, I checked several of my GLOCKS today and they all had it as well. I don't notice any issues so mine probably isn't sticking out as much as the one with the issue mentioned but still probably worth filing down a little the next time they are out of the gun.
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    I saw this post at the office today and checked my 30 while I was there. It doesn't have any issues. When I got home I checked the others and they seem to be fine as well. Thanks for the tip. Its great to know.
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    Quote Originally Posted by cohland View Post
    If your Glock trigger feels "notchy" intermittently, or if the trigger safety seems to catch on something, I may have the solution for you.

    At a GSFF match last year, I overheard a customer complain about a notchy trigger to the Glock factory Armorer present, who examined the pistol and referred to what he found as "Flash Moulding". He removed the trigger from the gun and filed off a projection on the trigger safety, and the problem was cured. I have since found and fixed this problem on two Glocks owned by friends of mine, so I thought it was time to pass along this information.

    In the attached photo, you will see an arrow on the paper pointing to the trigger safety. Notice that there is a projection on the trigger safety, a little bar that is oriented in the same direction as the arrow. That projection can be the source of problems, and can be safely filed or shaved down. On the guns I have fixed, I used an X-Acto knife or a file, and basically removed the projection completely. Problem solved. You'll see a similar projection at the rear of the trigger safety, but it is not in a position where it can catch on anything, so I've never bothered with it.

    The height of this projection varies, so in some guns it will cause a problem, while in others it is a non-issue. It isn't specific to any generation that I can see, I've found it on both Gen3 and Gen4 triggers. The one in the photo is a Gen3 trigger, by the way.

    Some earlier Glocks have a different projection (a "dot") or none at all.

    Attachment 2180

    Chris
    Thanks Chris. I have never run into this situation. Great info.
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    They are there to keep the safety centered in the trigger when your finger in applying pressure. some call them ware bars
    my opinions are just that, mine. I try to post facts backed with facts but that is not always posable so take it for what it is.

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    Quote Originally Posted by barstoolguru View Post
    They are there to keep the safety centered in the trigger when your finger in applying pressure. some call them ware bars
    The Glock Factory Armorer at a GSSF match called them a manufacturing error, and removed them.

    Chris
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    I started removing those on mine over 10 years ago, they were especially annoying on the old 20 and 21's.

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    THANKS Chris great info as always. I just checked the G 4 trigger on my 26 that i removed for a G3 and both have the flash molding. will be taking it down soon
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