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Convert 9mm to .300 blk


Sdl

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CMMG Banshee uses AR15 lowers, AND AR15 mags, with mag kits to convert the mags.  I hate to tell Rob, but those things run like a striped-ass ape.

We need to know more about the 9mm gun that this guy has, before we can make anymore recommendations, or critiques. 

14 hours ago, Sdl said:

I want to convert my 10.5 9mm upper to a 10.5 .300 blackout.

Then give up all the deails on your 9mm.  We cannot go forward with information, until you do that.  Descriptions are mandatory, pics are almost necessary.  Otherwise, we're just pissin' in the wind here, in this thread..

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