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Old 06-15-2010, 12:36   #3
charliepapa
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Join Date: Aug 2009
Posts: 19
The follower doesn't *appear* to be the issue. The actual spring is what's hanging up. IOW, the OD of the coil of the spring is ever so slightly larger than the ID of the factory mag tube.

My original thoughts were that if the G20/G21 factory mag tubes were the same except for the holes in the back, it should work. Am I missing something else?
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