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Posted: 11/20/2008 6:51:52 PM EDT
I see that I can oder a Colt 9mm block and I have a question. If I buy one of these 9mm block/inserts can I minimize issues later buy doing so. Are these inserts less problematic than others? Besides Colt mags which brand mags work best with these inserts? Will a RRA dedicated upper be good to go with a dedicated 9mm lower? I'm a newbie on this so please fill me in. Thanks
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