I bought the X-grip spacer for the 15 round M2.0 compact magazine and it had a weird lip on it that appears to match some kind of magazine with an extended baseplate shape. Even after taking it to a belt sander it still did not feel comfortable. I designed and 3D printed my own. Not pretty from a $200 printer but it does the job and fits tightly. It makes the magazine look like it belongs. BTW the 15 round mag makes the 9C the same height as the Shield 8 round mag.
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