Pennsylvania Firearm Owners Association
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  1. #1
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    Default Franklin binary trigger problem

    Hopefully someone can help me fix this issue. I just installed a franklin trigger, but for some reason it doesn't fire on the trigger release. On pull it releases the hammer fully, but on release it only releases partially. I've sanded the edges, tried using a different hammer spring and it still does it. hopefully someone else has had this problem and found a fix. Google has been little help

  2. #2
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    Default Re: Franklin binary trigger problem

    Franklin Armory Customer Service
    PHONE: 775-783-4313 (MONDAY THROUGH FRIDAY 9:00AM - 4:00PM PT)
    There are two kinds of guns. Those I have acquired, and those I hope to.

  3. #3
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    Default Re: Franklin binary trigger problem

    Is it true you need to *tune* a binary trigger in order to get it to operate correctly? I was reading up on them a little bit recently and came across some information that suggested things like changing ammo, etc. could throw off the trigger*s function, requiring adjustments to be made.
    “A Republic, if you can keep it.” - Benjamin Franklin

  4. #4
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    Default Re: Franklin binary trigger problem

    The adjustment they contend are to the buffer spring, but other components may stack and cause other problems.

    To the OP, what lower side you put the binary into and did it have a working trigger before?

    I can imagine an 80% could have tolerance stacking that could cause issues

  5. #5
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    May 2006
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    Default Re: Franklin binary trigger problem

    Did you function test it prior to shooting it? I have both BSFII and Echo binaries and they both work for me. I suspect OP didn't follow directions.

  6. #6
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    Default Re: Franklin binary trigger problem

    Franklin Armory Customer Service
    PHONE: 775-783-4313 (MONDAY THROUGH FRIDAY 9:00AM - 4:00PM PT)
    There are two kinds of guns. Those I have acquired, and those I hope to.

  7. #7
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    Feb 2007
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    Philadelphia, Pennsylvania
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    Default Re: Franklin binary trigger problem

    Quote Originally Posted by aubie515 View Post
    Did you function test it prior to shooting it? I have both BSFII and Echo binaries and they both work for me. I suspect OP didn't follow directions.
    Yes. It is failing the function test.

  8. #8
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    Default Re: Franklin binary trigger problem

    Quote Originally Posted by 85MikeTPI View Post
    The adjustment they contend are to the buffer spring, but other components may stack and cause other problems.

    To the OP, what lower side you put the binary into and did it have a working trigger before?

    I can imagine an 80% could have tolerance stacking that could cause issues
    Yes it had a working trigger prior, and no it's now a 80% lower. Bushmaster xm15 lower.

  9. #9
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    Mar 2009
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    Default Re: Franklin binary trigger problem

    Quote Originally Posted by Pierce8468 View Post
    Yes. It is failing the function test.
    Have you considered Bang's advice of using the Franklin armory customer service. I'm sure they've seen it all and a malfunctioning fire control unit can create a lot of problems for you. Especially if it starts going full auto.

    -Zach

  10. #10
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    Default Re: Franklin binary trigger problem

    Quote Originally Posted by staylo View Post
    Is it true you need to *tune* a binary trigger in order to get it to operate correctly? I was reading up on them a little bit recently and came across some information that suggested things like changing ammo, etc. could throw off the trigger*s function, requiring adjustments to be made.
    I am still in the function check stages. So currently I can say it's not a buffer spring or ammo issue

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