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Posted: 12/8/2003 5:30:02 AM EDT
[Last Edit: 12/8/2003 5:32:19 AM EDT by tallharleyrider]
Has anyone ever put a new postban M4 upper on a new Colt 6700 postban lower? I am new to the AR15 stuff and wanted to make my 20" HBAR more nimble and thought about changing the upper. Any problems with doing this that anyone can see. BTW, I just checked and it looks like I have the same, smaller-diameter holes as the other makers, for the takedown pin, etc.


Link Posted: 12/8/2003 6:00:42 AM EDT
Nope; if both pieces are small hole, just install away.
Link Posted: 12/17/2003 8:38:17 AM EDT
Great, thanks a lot
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