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Thread: fmk 3 pics?

  1. #11
    Gunco Regular akfiend's Avatar
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    but the flutes in the original receiver are stamped correct? so having a thicker wall would make up for the absense of flutes.

  2. #12
    GuncoHolic Rahatlakhoom's Avatar
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    You have a point there about the fluted area.
    The thicker tube would probably compensate for any fitting
    differences.
    Charter member-Busted Box Club est. 2006

    "I will adhere to the Patriot Act, the one signed in 1776"
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  3. #13
    GuncoHolic Rahatlakhoom's Avatar
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    FMK kit ordered.
    Looking to start the new year out right


    I will then be able to get more detailed pics if you need'em.
    Charter member-Busted Box Club est. 2006

    "I will adhere to the Patriot Act, the one signed in 1776"
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  4. #14
    Gunco Regular akfiend's Avatar
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    sweet deal, Im interested in seeing pics of the lower from a top view to see how the trigger and disconnector work. I think if i build one im gonna make it a carbine and thread the barrel and use one of those ar15 6inch flash hiders and put a lil baby tack weld to make it permanently attached. Another thought i had was why not ditch the sights and put a full length picatinny rail on top of the receiver and throw a red dot on it. PS happy new year!

  5. #15
    GuncoHolic Rahatlakhoom's Avatar
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    I like the carbine w/red dot idea.
    I expect that this model was FA design with no disconnector,
    Can't wait to see this thing.
    Charter member-Busted Box Club est. 2006

    "I will adhere to the Patriot Act, the one signed in 1776"
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  6. #16
    Gunco Member Artty's Avatar
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    The FMK has a three position selector Safe, Semi, and Auto. The ribs in the tube serve a purpose of centering the bolt, reducing friction, and clearing debris in the tube. I started working on a hammer fired version but got sidetracked with the SIG repair section. A striker setup similar to the twin bar sten would also work. I was also working on a tube with the ribs pressed in. If you need anymore info just ask.
    Artty
    "IYAOYAS"
    FFL 07

  7. #17
    GuncoHolic Rahatlakhoom's Avatar
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    Good to see you here Artty.
    It also occurred to me that a hammer or striker presents an access problem
    with a fixed tube. I am thinking along the lines of a hinged tube that locks down
    like a KP-44. That way you have clearance to the trigger mechanism in the lower.

    Sub guns of that era were on the trail set by the M3 Grease gun stamped shell design.
    Which i guess was originally a German concept cheapened for disposal and replacement.
    Charter member-Busted Box Club est. 2006

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  8. #18
    Gunco Member Artty's Avatar
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    The tube is pinned on to the lower like an AR but it recesses into a round backplate on the lower.
    Artty
    "IYAOYAS"
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  9. #19
    Gunco Regular akfiend's Avatar
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    the recess in the back plate should show us what the outer diameter of our tube should be. some blueprints for the receiver would be nice although you could just wing it and use the parts as a guide to where your cutouts need to be.

  10. #20
    GuncoHolic Rahatlakhoom's Avatar
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    Quote Originally Posted by akfiend View Post
    the recess in the back plate should show us what the outer diameter of our tube should be. some blueprints for the receiver would be nice although you could just wing it and use the parts as a guide to where your cutouts need to be.
    Parts kit looks like it comes with fore and aft receiver pieces.
    Blueprints aren't necessary, out of scale photos suffice.
    I did this with an FBP.

    Quote Originally Posted by Artty View Post
    The tube is pinned on to the lower like an AR but it recesses into a round backplate on the lower.
    Artty

    Even better than a hinged set-up.
    Charter member-Busted Box Club est. 2006

    "I will adhere to the Patriot Act, the one signed in 1776"
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