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Thread: is it just me (head spacing)

  1. #1
    Gunco Veteran muttman's Avatar
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    Default is it just me (head spacing)

    I got the time to set the barrel on my 5.56 ak and got the go guage to turn in, the no go guage starts to turn but stops, next a spent case will lock up.
    with the reciver in place the bolt cariear stops 1/2" or so from the trunion with all three. what did I do wrong? an I still to thight?. I have checked spacing on a instaled barrel (kit) but this is a nib barrel.
    thanks

    muttman

  2. #2
    GuncoHolic kernelkrink's Avatar
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    If the bolt locked with the go guage it should lock with the carrier installed. Does the carrier close fully without the bolt in or bolt in without a guage? If not, the carrier is being stopped by something or it is holding the bolt out of line.

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    Gunco Member Thylacine's Avatar
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    Piston not seating?
    "Igitur qui desiderat pacem, praeparet bellum."
    Therefore, whoever wishes for peace, let him prepare for war.

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    Gunco Veteran muttman's Avatar
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    kernel,
    the carrier will close all the way with no guage. could you explane "out of line" not sure what you meen.
    thyacine,
    I have not made a piston yet. Im using a rommy g/b that when instaled the standerd gas tube needs to be cut back .25" I was hopping to get spacing complete befour biying a piston. muttman

  5. #5
    Gunco Regular Gunter's Avatar
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    If I read it right, you were just using the bolt to set the headspace in the trunnion. Then when the bolt is installed in the carrier and the trunnion to the receiver, the carrier doesn't reach the stop on the trunnion and the bolt does not lock. Correct?
    Last edited by Gunter; 11-13-2008 at 02:09 PM.
    "Take time to deliberate, but when the time for action has arrived, stop thinking and go in."

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  6. #6
    Gunco Veteran muttman's Avatar
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    gunther,
    yes, I was double checking. this is a screw build so it is easy to do.
    muttman

  7. #7
    GuncoHolic kernelkrink's Avatar
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    If the bolt is not going into the trunnion dead on straight the bolt will try to straighten itself as it locks, but the carrier will prevent that causing binding. If anything is tweaked out of line that could cause a misalignment.

  8. #8
    Gunco Regular COYOTE3's Avatar
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    Is the ejector stopping the bolt?

  9. #9
    Gunco Regular resting's Avatar
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    Quote Originally Posted by COYOTE3 View Post
    Is the ejector stopping the bolt?
    I think Coyote is on to something. I had that experience once. The ejector was too long and was pushing the bolt out of line when the bolt carrier was used although the bolt would lock up fine without the carrier.

  10. #10
    Gunco Veteran gunnysmith's Avatar
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    Is there a bullet guide in the trunion?
    That is what initiates the bolt turning.
    Constitution Or Bust
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