Thread: SBR whisper 8inch barrel?
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Old 08-20-2010, 04:33 PM
mak91 mak91 is offline
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Join Date: Oct 2009
Posts: 63
To short to run without moving the gas port back some. Here is a thread with some info about it.


http://www.quarterbore.net/forums/showthread.php?t=3768
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