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3/3/2012 9:33:11 AM EDT
What length of forearm do you need to butt up to the front sight post on a barrel with a mid length gas system? 9"?  11" if you want to just cover a low profile gas block?
3/3/2012 12:17:34 PM EDT
[#1]
11" will just cover a lo pro gas block on a midlength.  9" for an exposed gas block.
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