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Old 03-03-2015, 04:29   #7
Combat Diver
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Join Date: May 2010
Location: NC/Baghdad, Iraq
Posts: 474
The 5.5" FH going on a 11.5" bbl would make it legal at 16". There is a .5 overlap for the FH threading on. I used to have one on my first AR build back in 87' to give it that XM177 look. After installing ensure that it's pinned and welded on to keep ATF off your back.

CD
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