How will you configure it? Pistol braces are not halal if I recall correctly. I hate them, so don’t pay attention9 mm, 8 inch, the banshee 300 type features , ambi controls, cheap mags so thinking about the Glock 33 rounders or 15 17 will do, I guess what your previous post was saying about an upper and a Glock lower with the AR parts. For compatibility I hope that's what you were looking for
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