Pennsylvania Firearm Owners Association
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  1. #1
    Join Date
    Oct 2006
    Location
    Pittsburgh, Pennsylvania
    (Allegheny County)
    Age
    64
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    Default Need help w/ FRT install on my S&W AR

    Installed an Rare Breed FRT trigger in my S&W AR.
    Had to swap out the factory BCG & replace it with a full auto M16 BCG.
    Everything went together perfectly. The trigger absolutely rocks.
    HOWEVER:
    After disassembling for cleaning, the upper & lower refuse to close.
    There's a ⅛" gap between the two receivers at the rear takedown pin location.
    When I first installed the new trigger setup, I think I was able to push the bolt itself into the carrier assembly. That allowed enough clearance for the 2 receivers to close properly.
    Repeating that act doesn't seem possible now.
    I'm open to everyone's input & advice.
    AND:
    For those who have yet to try one of the new FRT triggers (Rare Breed or Big Daddy's Wide Open Trigger), do yourself a favor, get one while you still can !
    "Mongo just pawn in game of life"

  2. #2
    Join Date
    Feb 2007
    Location
    next to my neighbor, Pennsylvania
    Posts
    11,509
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    21474862

    Default Re: Help needed. FRT Trigger install on my AR.

    Another reason I hate taking apart my guns to clean them. As for the op, I dont know but I'm interested,
    as I want to purchase one of these triggers.

  3. #3
    Join Date
    Sep 2011
    Location
    Mt. Pleasant
    Posts
    2,074
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    20935159

    Default Re: Help needed. FRT Trigger install on my AR.

    We need pictures. Will it close without the bolt? Is the sear hitting the bcg?

  4. #4
    Join Date
    Jan 2019
    Location
    Bedford
    Posts
    329
    Rep Power
    21474839

    Default Re: Help needed. FRT Trigger install on my AR.

    Quote Originally Posted by franknphilly View Post
    Installed an Rare Breed FRT trigger in my S&W AR.
    Had to swap out the factory BCG & replace it with a full auto M16 BCG.
    Everything went together perfectly. The trigger absolutely rocks.
    HOWEVER:
    After disassembling for cleaning, the upper & lower refuse to close.
    There's a *" gap between the two receivers at the rear takedown pin location.
    When I first installed the new trigger setup, I think I was able to push the bolt itself into the carrier assembly. That allowed enough clearance for the 2 receivers to close properly.
    Repeating that act doesn't seem possible now.
    I'm open to everyone's input & advice.
    AND:
    For those who have yet to try one of the new FRT triggers (Rare Breed or Big Daddy's Wide Open Trigger), do yourself a favor, get one while you still can ! *.
    Mine fell overboard so I can't view it, but I recall if the hammer is cocked or not cocked, the reset will interfere with the bolt
    and not allow the upper to fully seat. Try to cycle the hammer to the other position and retest...
    Last edited by 85MikeTPI; October 12th, 2021 at 09:44 PM.

  5. #5
    Join Date
    Oct 2006
    Location
    Pittsburgh, Pennsylvania
    (Allegheny County)
    Age
    64
    Posts
    69
    Rep Power
    17

    Default Re: Help needed. FRT Trigger install on my AR.

    It closes properly without the BCG.
    I know there's a solution. The system worked perfectly when I initially installed it.
    Working on pictures.

  6. #6
    Join Date
    Jun 2010
    Location
    Eastern PA, Pennsylvania
    (Delaware County)
    Posts
    1,293
    Rep Power
    21474849

    Default Re: Need help w/ FRT install on my S&W AR

    Try the above first...if that doesn't work, trying pulling the CH just enough to close the upper/lower together. Some have reported issues with closing them due to tolerances of different length BCG's.

    I would check out the trigger and check for marks from your BCG on the top of the reset bar. Also check the spring which is angled in the trigger housing...making sure it is not kinked. There is a rather extensive thread on AR15.com which deals with all of the issues some have had along the way. There is also many fixes, which can be done by the end user.

  7. #7
    Join Date
    May 2010
    Location
    Scenery Hill, Pennsylvania
    (Washington County)
    Age
    33
    Posts
    2,647
    Rep Power
    21474850

    Default Re: Need help w/ FRT install on my S&W AR

    Make sure the hammer is cocked.

  8. #8
    Join Date
    Oct 2006
    Location
    Pittsburgh, Pennsylvania
    (Allegheny County)
    Age
    64
    Posts
    69
    Rep Power
    17

    Default Re: Need help w/ FRT install on my S&W AR

    OP HERE.
    Problem Solved.
    The Reset Bar on the FRT Trigger was preventing the upper & lower from closing properly.
    A small, thin bladed knife was inserted between the two halves to push the reset bar forward allowing proper closure.
    A small dab of gun grease on the reset would have likely have prevented the problem from occurring in the first place.
    I'm told that this is a common occurrence with the new Forced Reset Triggers, Rare Breed, Wide Open, etc.

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