doubletap Posted March 20, 2006 Share Posted March 20, 2006 I am looking into buying a new m4, how do I check if it is a 2 port or a 4 port barrel? Quote Link to comment Share on other sites More sharing options...
tucker301 Posted March 20, 2006 Share Posted March 20, 2006 http://www.benelliusa.com/forums/ultimatebb.php/topic/1/2103.html#000001 Quote Link to comment Share on other sites More sharing options...
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