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Discussion Starter #1
does anyone have any good directions/ pictures of removing usc lower parts to ump lower? Any help will be app.
 

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Discussion Starter #4
With that link I was able to get the parts swiched out in about 20min. I still have to epoxy to fill the lower but it runs like a dream. NO SNOWGLOBE REQUIRED!!!! Thanks alot apf383. Now to get the trust and take it for a little spin!
 

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It is my understanding that only the UMP grip housing with mag release and bolt catch is being used, all of the UMP internals and selector(even with a 0-1/SF UMP group) are removed and the USC internals and selector installed. How muh have people been able to get for the UMP internals and selector?
 
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