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Thread: Suomi Drum / M11 (RO) Conversion

  1. #361
    UZI Talk Life Member
    strobro32's Avatar
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    Sep 2007
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    I have new ZMAGs on the way. 2.0 this weekend.

    Does anyone have the length and width of the aluminum tube used for the dummy rounds?

  2. #362
    UZI Talk Life Member
    strobro32's Avatar
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    Sep 2007
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    2.0 has been tested. The linked cartridges feed smooth and the spring is plenty powerful at a preset of three rotations. I am running 4 rotations now. The feed angle at the feed lips is perfect.

    This drum will not reliably keep up with ROF of 1600 rounds per minute of a M11/9 SMG. I get 1 or more feed issues per drum where the bolt closes on an empty chamber. I will try to tweak it and test again this weekend. I'm sure this is why the slower rate of fire of the Uzi, Colt or MP5 Suomi drum systems are more popular to ma