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Thread: Barrel Length

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    Barrel Length

    Just how is barrel length measured? From receiver to muzzle, chamber to muzzle, what?

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    Senior Member Helen Keller's Avatar

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    bolt closed, dowel rod down the barrel . measurement ends at muzzle or permanent attached device.
    I KILL WHITE PEOPLES LIKE YOU

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    Administrator imanaknut's Avatar

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    With the bolt closed, ATF drops a rod into the barrel. If the 16 disappears, it is legal per the constitution. If the 16 is visible, it is illegal per ATF.

    Seriously, measure using a dowel in the bore with the bolt closed. That is the barrel length. If you have a removable muzzle device it must be removed. A fixed muzzle device counts as barrel length.

    PS, Welcome to the group !!!

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    I was thinking it was that, but didn't know for sure. Thanks, and thanks for the welcome. Looks like a fine forum.

  5. #5
    How barrel length is measured depends on the type of firearm.

    For most rifles, shotguns, and automatic pistols dropping a rod down the barrel with the action closed is correct.
    Revolvers are measured from the front face of the cylinder to the muzzle.

  6. #6
    Administrator Krupski's Avatar

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    Quote Originally Posted by Doug76 View Post
    Just how is barrel length measured? From receiver to muzzle, chamber to muzzle, what?
    Welcome to Gunsnet!

    Let me add to the info you've already been given... when you measure a barrel add at least 1/8 to 1/4 inch (or even 1/2 inch) so that you have 16 inches PLUS (like 16-1/2).

    If you are a whisker short of 16.000 inches the BATFE will come stomp your kittens and burn your house down. Be on the safe side.
    Gentlemen may prefer Blondes, but Real Men prefer Redheads!

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