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10mm magazines


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#21 deerslayer

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Posted 18 November 2017 - 06:26 PM

Does the front of the magazine have the standard GI markings or does it appear like numrich made a completely new magazine. All the 30 round GI mags have some markings... no blank ones have ever been described in print.
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#22 shifterkarter

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Posted 19 November 2017 - 07:53 AM

It is stamped... The Seymour Products Co.  

                                Seymour Conn. 

 

 

ej


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#23 deerslayer

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Posted 19 November 2017 - 08:45 AM

Ahh there we have it. 10mm Thompson mags are GI .45 acp mags with possibly slight modifications to the feed lips as indicated by the pictures and "10mm" stamped into the floor plate.
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#24 shifterkarter

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Posted 19 November 2017 - 09:19 AM

looks like there is also a slight grind to the follower arm


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