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By David Crane defrev (at) gmail (dot) com Photo Credits: Sturm Ruger & Co., Inc. June 7, 2009 Updated on 6/16/09 Ever since the late

by David Crane david@defensereview.com Barrett Firearms Manufacturing, Inc. recently introduced a new semi-auto bullpup .50 BMG anti-materiel/sniper rifle at NDIA Small Arms Symposium 2006. We’ve been told by an outside source that the new rifle is called the XM500 (or XM-500), but we don’t have confirmation on this designation, yet. The only info we have on the new .50 Cal. …