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2011 New style STI mags.

Red Ryder

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Are these new 9mm mag tubes interchangeable with the old style 9mm/38 super STI mags? I have 4 old style mags (with spacers) with Dawson +2(3) base pads with Grams springs and followers. Can I just switch out the tubes, or are the followers different?

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Also, idk how it is with 9mm, but for .40, the followers are different. A gen two follower will not sit flush to the top with a gen one tube. It sits about 1/4 of an inch low. It does still work however. I made a Frankenstein mag up for dry fire with oem parts from a gen two mag with an old gen one tube after I swapped everything for tti guts. 


I wouldn’t run it in a match tho. 


Best of luck,



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