Barrel lengths Dec 2, 2012 7:44:06 GMT -5 via the ProBoards App Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by imnatree on Dec 2, 2012 7:44:06 GMT -5 Just doing some self education and came across this article. Thought I'd share:www.tacticaloperations.com/SWATbarrel/