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UMP Mag. Wiggling

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I know this is going to sound very anal...but my UMP mags seem to be pretty loose in my UMP conversion mag well. They wiggle from side to side quite a bit and a was wondering if this is normal, or if you guy's conversions are pretty solid.

Thanks for any input!

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Discussion Starter · #4 · (Edited)
HDPS. I don't want to sound like I'm complaining...Cause Ed did a fantastic job...I'm wondering if too much material was removed from the upper receiver though.

It looks like the material removed to make room for the magazine is taken to within about millimeter or 2 of the receiver wall on both sides...Does this plastic help told the magazine solid?
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