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Mystery Tools

Discussion in 'Gunsmithing and Repairs' started by RBANNON, Apr 28, 2013.

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  1. RBANNON

    RBANNON Member

    Joined:
    Aug 17, 2006
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    41
    Hello all,

    I found a couple of tools in a catch all box I purchased at an auction. They appear to be factory made. The tools were mixed in with some other gunsmithing items. My gut says they could be some sort of shotgun tool. One tool has:

    O.F.M. P/N
    F-3647

    and the other has

    F 1804

    They appear to be from the same maker or source. Any help would be appreciated. Thanks in advance.

    rbannon
     

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  2. Reloadron
    • Contributing Member

    Reloadron Member

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    O.F.M. could be OF Mossberg but I don't have a clue. I am not a shotgun type.

    Ron
     
  3. Tolkachi Robotnik

    Tolkachi Robotnik Member

    Joined:
    Jul 26, 2012
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    Location:
    Midwest
    Second one a gauge?

    The first one might be something that goes into buttstocks but I am unsure. I made a large screwdriver once to release a main bolt to the receiver on a break action. It might also be something to drift sights. Also, are the small holes such that might break loose a bead on the end of a shotgun? Are they six sided? The groove would allow a cantilever tightening if used for such, or could be gapped about a bead and then would grip.

    The second one if thick might be a gauge to figure the forcing cone/chamber dimension. Measure and see if it is 2 3/4 inches. If it pulled away from the chamber wall as you slid it in you would have a shorter than standard chamber in a shotgun.

    I have never seen any specific tool like either of these.
     
  4. Jim K

    Jim K Member

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    Dec 31, 2002
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    17,754
    The second one looks like a firing pin protrusion gauge. Put on the breech face, the firing pin should just touch the inside of the notch.

    Jim
     
  5. BBBBill

    BBBBill Member

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    The first one looks like it might have a similar function to the Marvel High Standard hammer installation tool. Not exactly the same, but .....
     
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