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Thread: Definite manufacturing issue with 2k9 mag

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  1. #1

    Definite manufacturing issue with 2k9 mag

    Trying to get to the bottom of my 2k9 issue of not being able to get it up to a proper velocity, I decided to make a quick measurement.
    And they're is definitely a manufacturing prolblem.
    I measured inside the body from whe the valve ring in a regular mag body is, to whe the field screw goes. It was about 2 3/4 inches.
    With the 2k9 it's 3 inches.
    Thats a huge difference with the small tolerances Automags work under.

    Can anyone here with a 2k9 and a standard mag, checkmy measurements.
    If those with proper functioning 2k9's report different numbers then I can only surmise that some of these we not milled correctly.

  2. #2
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    Measured a ULE and MiniMag body, both came in at about 2 7/8" to the front of the FS hole. Measured my MM2K9 without the insert and came in around 2 15/16, With the insert it is closer to 2 3/4, but probably because there is a lip on the insert keeping the tape measure from going in the extra 1/16 of an inch. I chrono fine. 285/290 all day long.

  3. #3
    Quote Originally Posted by OPBN
    Measured a ULE and MiniMag body, both came in at about 2 7/8" to the front of the FS hole. Measured my MM2K9 without the insert and came in around 2 15/16, With the insert it is closer to 2 3/4, but probably because there is a lip on the insert keeping the tape measure from going in the extra 1/16 of an inch. I chrono fine. 285/290 all day long.
    Mine is 3" with the insert.

  4. #4
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    Just so we are on the same page, I am using a tape measure that just fits inside of the body. I am sliding it in until it hits something. In this case it's the lip from the insert.

  5. #5
    Rechecked my measurements,also using a tape measure.
    I am measuring from where the spring will hit the insert on the 2k9, and the metal insert on the ule body.

    The ULE ring to the FS is 3 1/2 "
    The 2k9 ring to the FS is 3"

  6. #6
    OPBN, when you look into the breach, what do you estimate the thickness of aluminum from the insert to where the removable breach is? Mine is about a 1/4" of aluminum.

  7. #7
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    Quote Originally Posted by Henchman
    Rechecked my measurements,also using a tape measure.
    I am measuring from where the spring will hit the insert on the 2k9, and the metal insert on the ule body.

    The ULE ring to the FS is 3 1/2 "
    The 2k9 ring to the FS is 3"
    Ive measured 3 seperate bodies and all of them are 2 7/8 to the front of the FS hole. If you are getting 3 1/2" something is wrong. The spring sits on the inside of the insert, my tape measure will not fit inside the insert, so I am measuring from the lip. Before you were saying the MM2k9 was longer, now you are saying its shorter?

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