http://www.gdatp.com/products/lethality/xm307/xm307.htm
http://www.globalsecurity.org/military/systems/ground/m307.htm
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XM-312 .50 BMG Heavy Machine Gun:
http://www.gdatp.com/products/lethality/xm312/xm312.htm
http://www.globalsecurity.org/military/systems/ground/m312.htm
If Kerry had one of those on his SLOW (Stupid Liberal Opposing War) boat, he might have killed two cows!