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Thread: FCG Pocket Dimensions

  1. #1
    Gunco Member Greg B's Avatar
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    Default FCG Pocket Dimensions

    Hi everyone,
    Just registered recently, first post.
    I have an 80% lower and looking at the CNC guns drawings, and comparing them to the steps from Colfax in the DRO PDF, I;m coming up with some slight variations.
    Before I start cutting, I want to be absolutely sure of my dimensions.
    Basically, anyone know for sure if the Colfax dims are right?
    Thanks, Greg B.

  2. #2
    No Hope For Me Coils's Avatar
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    Welcome to the forum

    Maybe adding links to the places your seeing these ate might help more

    Did you see this? Maybe it will help if it matches one of the others
    http://www.gunco.net/forums/f162/ar1...-prints-38010/
    "Government is not the solution to our problem, government is the problem" Ronald Reagan

  3. #3
    Gunco Member Greg B's Avatar
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    Colfax Tactical

    Here is the Colfax info.
    Look @ # 6 in the list.

    The drawings you posted I DO have, but they are a little hard to figure out where some of the measurements are coming from.
    Last edited by Greg B; 12-20-2012 at 12:28 AM. Reason: poor spelling on my part

  4. #4
    Gunco Member Greg B's Avatar
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    I'm really wanting to make sure I get the boss between the rear lug cavity & the fire control main cavity in the right location.

  5. #5
    Gunco Member Greg B's Avatar
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    This is a test pocket I made with a scrap piece of aluminum I had laying around.
    The boss in I have a question about is marked.
    Anyone have easy access to a lower that could verify that measurement?
    Thanks, Greg B.

  6. #6
    TURD woodey's Avatar
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    On some current run 100% lowers that bump is left out & is straight with the back of the pocket

  7. #7
    Gunco Member Greg B's Avatar
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    Cool.
    Makes me not so worried about the machining.
    Thanks, Greg B

  8. #8
    No Hope For Me Coils's Avatar
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    Thanks for the link

    I check a poly lower and it doesn't have that bump in it
    "Government is not the solution to our problem, government is the problem" Ronald Reagan

  9. #9
    GuncoHolic 2ndAmendican's Avatar
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    Greg, that's a great link! Thanks!!
    Enforcement, NOT Amnesty!!!!!!

    "If they’re going to come here illegally, apply for & receive assistance through a corrupted Government agency encouraging this lawless behavior, work under the table & send billions of dollars each year back to their families in Mexico, while bleeding local economies dry, protest in our streets waving their Mexican flags DEMANDING rights, while I have to press ’1′ for English, then they need to be shipped back to where they came from!" -Chad Miller

  10. #10
    Gunco Member Greg B's Avatar
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    You know, I wonder why, if you have a DRO, why wouldn't one just go ahead and drill the selector and other holes instead of using a jig?
    That's what I'm going to do.

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